You start a new year—or perhaps just another Monday—with a mentally organized list of changes you finally want to make: sleep better, eat more balanced meals, move more, reduce stress. Some days go well. Then routine pressures, fatigue sets in, and that well-planned habit silently slips away. If you’ve experienced this, know that it’s more common than it seems—and there’s an explanation.
The difficulty in maintaining healthy habits is not due to a lack of willpower, character weakness, or disregard for one’s health. Behavioral psychology and neuroscience research have shown for decades that the human brain has been shaped by evolutionary processes favoring immediate reward and energy conservation—exactly the opposite of what many healthy habits require. Understanding this mechanism is the first step to stop blaming yourself and start acting more kindly and strategically towards yourself.
This article compiles what science usually points out about habit formation, the most frequent obstacles, and some approaches that may help make changes more lasting. It does not replace the guidance of a health professional—each journey is unique, and a doctor, psychologist, or nutritionist can evaluate your context much more deeply.
What Happens in the Brain When We Try to Create a Habit
To understand why it’s difficult, it helps to know a bit about how habits form. According to studies in behavioral neuroscience, repeated behaviors create neural connections that, over time, become increasingly automatic. This process is primarily mediated by the basal ganglia, brain structures involved in learning routines.
The problem is that consolidating a neural connection requires consistent repetition—and the reward often takes time to appear. While smoking, sugar, or endless scrolling on a phone offer almost immediate pleasure, the benefits of sleeping well or exercising tend to accumulate gradually, making initial motivation hard to sustain.
Additionally, the brain is extremely good at conserving energy. Once a behavior pattern is established—even if it’s harmful—it tends to be repeated “on autopilot.” Creating a new habit means, on some level, competing with this already established automatism.
The Most Common Obstacles (and What They Have in Common)
There are some patterns that frequently appear when people report difficulty in maintaining healthy habits:
- Very high expectations from the start: starting with overly ambitious goals can lead to rapid burnout and a sense of failure when the pace doesn’t hold.
- Lack of clarity about the “why”: when motivation comes only from external pressure (“I need to lose weight,” “the doctor said so”), it tends to be less lasting than when connected to personal values.
- Unfavorable environment: if the fridge is full of ultra-processed foods or there’s no accessible place to exercise, the effort needed to act differently increases significantly.
- Too many simultaneous changes: trying to transform diet, sleep, exercise, and social media all at once overloads self-management capacity.
- The so-called “all-or-nothing” failure: a slip-up one day is interpreted as total failure, leading to complete abandonment of the attempt.
What these obstacles have in common is that they all amplify perceived effort—and the greater the perceived effort, the lower the likelihood of repetition.
The Role of Environment and Triggers
One of the most practical discoveries of behavioral psychology is that habits are strongly associated with contexts. It’s not just a matter of conscious decision; it’s also a matter of the environment you’re in, the people around you, and the sensory triggers that prompt certain behaviors.
Studies suggest that redesigning the physical environment can be more effective than trying to “be more disciplined.” Some examples of what often works in practice:
- Leaving washed and visible fruits on the counter instead of stored at the back of the fridge.
- Placing running shoes next to the bed so they’re the first thing seen upon waking.
- Silencing notifications from apps that compete with sleep time.
This concept, sometimes called “choice architecture,” doesn’t eliminate the need for effort, but usually reduces the friction between intention and action.
Motivation vs. System: Why Relying Solely on “Wanting” Isn’t Enough
There’s a popular belief that people who maintain healthy habits simply “have more willpower.” However, psychology research tells a different story: willpower functions like a resource that depletes throughout the day—a phenomenon known in the literature as ego depletion, although this concept is still debated by researchers.
What often distinguishes those who maintain habits is not an infinite reserve of motivation but the existence of systems and routines that make action more automatic. In other words: the decision was made in advance, and the environment was organized to support it.
This has an important implication: instead of waiting to feel motivated to act, it may be more effective to act first, on a small scale, and let the sense of progress fuel motivation over time.
If you want to start building a healthier routine gradually, you can find some practical ideas in our article Healthy Morning Routine: Where to Start.
Mental Health and Habits: A Two-Way Street
It’s impossible to talk about the difficulty in maintaining healthy habits without mentioning mental health. Anxiety, depression, chronic stress, and burnout—conditions increasingly discussed in 2026—directly affect the available energy, planning ability, and motivation to take care of oneself.
When someone is going through a period of intense suffering, demanding an impeccable routine from oneself can be counterproductive and even cruel. In these moments, the most important thing is to seek support—from a psychologist, psychiatrist, trusted doctor, or close people.
If you’re facing emotional difficulties beyond everyday fatigue, know that help exists. In Brazil, the CVV (Centro de Valorização da Vida) can be reached at 188, free of charge, 24 hours a day. In emergencies, seek medical attention immediately.
The relationship between mental health and habits is two-way: psychological distress makes habits difficult, but consistent habits—even small ones—also can contribute to emotional well-being over time. Therefore, it’s not about solving everything at once but finding where to start, respecting your current limits.
Strategies Suggested by Studies to Be Useful
Below are some approaches that behavioral and public health literature often point to as promising. Remember: what works varies from person to person, and none of these strategies replace individualized professional guidance.
- Start smaller than seems necessary. If the goal is to exercise more, starting with 10 minutes a day is often more sustainable than starting with an hour. The initial goal is to create consistency, not volume.
- Connect the new habit to an existing behavior. This technique, sometimes called habit stacking, involves anchoring the new behavior to something you already do—like drinking a glass of water right after brushing your teeth.
- Make progress visible. Marking on a calendar the days you performed the desired behavior may seem simple, but studies suggest that visualizing progress helps maintain engagement.
- Plan for obstacles. Instead of imagining everything will go well, ask yourself: “What might stop me tomorrow, and what will I do if that happens?” This approach, known as implementation intentions, often increases consistency.
- Treat slip-ups as information, not failure. One day off routine doesn’t erase the previous ones. Understanding what happened and resuming the next day is more effective than giving up.
- Take care of sleep. Solid evidence indicates that sleep deprivation impairs decision-making, emotional control, and motivation—making all other habits harder to maintain.
- Seek social support. Sharing goals with someone you trust or practicing habits in a group often contributes to persistence over time.
When to Seek a Health Professional
Some situations indicate that the difficulty in maintaining habits may be related to issues that deserve specialized evaluation:
- When there is persistent fatigue or lack of energy that doesn’t improve with rest.
- When difficulty in organizing or maintaining routines is associated with symptoms like prolonged sadness, intense anxiety, or difficulty concentrating.
- When the relationship with food or exercise causes distress, excessive guilt, or extreme behaviors.
- When sleep problems are constant and impact quality of life.
- When you feel that lifestyle changes are necessary but don’t know where to start safely for your specific case.
Doctors, psychologists, nutritionists, and physical educators are professionals who can offer individualized, safe, and context-based guidance on your actual health.
Conclusion
Maintaining healthy habits is genuinely difficult—not because you don’t care about your health, but because the human brain, the environment we live in, and the demands of everyday life often point in opposite directions. Understanding this is not an excuse; it’s a more honest and kinder starting point.
The good news is that small consistent changes, made with patience and adapted to your reality, often contribute to more lasting results than large transformations that sustain for only a few weeks. You don’t need to do everything at once, nor be perfect—you just need to keep trying, in a way that respects who you are and the moment you’re in.
Take care of yourself with kindness. And remember: seeking professional help is not a weakness—it’s, in itself, a healthy habit.
This content is for informational and educational purposes only. It does not replace evaluation, diagnosis, or treatment by a qualified health professional. Always consult a doctor, psychologist, nutritionist, or other qualified professional for guidance appropriate to your case.
- Seek social support. Sharing goals with someone you trust or practicing habits in a group often contributes to persistence over time.
- Take care of sleep. Solid evidence indicates that sleep deprivation impairs decision-making, emotional control, and motivation—making all other habits harder to maintain.
- Treat slip-ups as information, not failure. One day off routine doesn’t erase the previous ones. Understanding what happened and resuming the next day is more effective than giving up.
- Plan for obstacles. Instead of imagining everything will go well, ask yourself: “What might stop me tomorrow, and what will I do if that happens?” This approach, known as implementation intentions, often increases consistency.
- Make progress visible. Marking on a calendar the days you performed the desired behavior may seem simple, but studies suggest that visualizing progress helps maintain engagement.
- Connect the new habit to an existing behavior. This technique, sometimes called habit stacking, involves anchoring the new behavior to something you already do—like drinking a glass of water right after brushing your teeth.
- Start smaller than seems necessary. If the goal is to exercise more, starting with 10 minutes a day is often more sustainable than starting with an hour. The initial goal is to create consistency, not volume.
- Lack of clarity about the “why”: when motivation comes only from external pressure (“I need to lose weight,” “the doctor said so”), it tends to be less lasting than when connected to personal values.
