The process of change refers to the specific mental and behavioral strategies people use to move through the stages of changing a habit or behavior. Psychologists James Prochaska and Carlo DiClemente identified ten distinct processes of change in the late 1970s while studying why some smokers could quit on their own while others needed treatment. Their framework, called the Transtheoretical Model (or Stages of Change Model), remains one of the most widely used models for understanding how people modify behaviors like smoking, overeating, inactivity, and substance use.
These ten processes fall into two categories: thinking strategies that shift how you see the problem, and action strategies that reshape what you actually do. Different processes matter more at different points in the journey, which is why generic advice to “just change” rarely works.
The Six Stages Change Moves Through
Before diving into the processes themselves, it helps to understand the stages they’re designed to move you through. The model identifies six: precontemplation (you don’t see a problem), contemplation (you’re aware of the problem but not ready to act), preparation (you’re planning to act soon), action (you’re actively changing the behavior), maintenance (you’ve sustained the change for at least six months), and termination (the old behavior no longer tempts you at all).
These stages aren’t strictly linear. People cycle back to earlier stages regularly. The model treats this recycling as a normal part of the process, not a failure. Someone who quits smoking for three months and then relapses typically returns to the contemplation or preparation stage rather than starting from scratch, because the skills and self-awareness they built carry forward.
Five Thinking Processes That Shift Your Mindset
The first five processes of change are cognitive. They reshape how you think and feel about a behavior, and they’re most active during the earlier stages when you’re moving from not thinking about change to seriously considering it.
Consciousness raising is the process of actively seeking new information about the problem behavior. This might look like reading about the health effects of a sedentary lifestyle, looking up nutritional information, or asking a doctor pointed questions. The goal is to close the gap between what you assume and what’s actually true.
Dramatic relief involves experiencing strong emotions connected to the behavior and its consequences. Watching a documentary about lung disease, hearing a friend’s diagnosis, or simply allowing yourself to feel fear or grief about where a habit is leading you. These emotional experiences create urgency that pure information alone can’t.
Environmental reevaluation is when you step back and consider how your behavior affects the people and world around you. A heavy drinker might reflect on how their drinking changes family dinners. A parent who smokes might think about secondhand smoke exposure. This process connects personal behavior to its wider ripple effects, which often motivates change more powerfully than personal health risks alone.
Self-reevaluation turns that lens inward. It’s an emotional and cognitive reappraisal of your own values in relation to the behavior. You ask yourself whether the habit aligns with who you want to be. Techniques like visualizing your future self, both with and without the change, can make this process concrete. When people say “I just woke up one day and realized this isn’t me anymore,” they’re often describing the result of self-reevaluation that’s been building for a while.
Social liberation is the recognition that your environment offers alternatives you hadn’t noticed or embraced. Smoke-free restaurants, alcohol-free social events, bike lanes in your city, workplace wellness programs. Noticing these options makes change feel more supported and less like swimming against a current.
Five Action Processes That Build New Habits
The remaining five processes are behavioral. They become most important during the preparation, action, and maintenance stages, when you’ve committed to change and need practical strategies to sustain it.
Self-liberation is the act of making a firm commitment and believing you can follow through. This is where New Year’s resolutions live, but also where deeper commitments form. Telling friends about your goal, writing down a plan, or making a public declaration all strengthen self-liberation. The key ingredient is genuine belief in your ability to change, not just the desire to.
Counterconditioning means substituting a healthier response for the old behavior when a trigger hits. If stress used to send you to the fridge, counterconditioning might involve going for a walk instead, practicing deep breathing, or using positive self-talk. The idea is to pair the old trigger with a new, competing response until the new one becomes automatic. Over time, the trigger loses its power to pull you toward the old habit.
Helping relationships involve leaning on people who support your change. This goes beyond casual encouragement. It means having someone you trust enough to be honest with about setbacks, someone who accepts where you are without judgment. Support groups, therapists, close friends, and partners all fill this role. Research on the model consistently identifies helping relationships as one of the most impactful processes across virtually every type of behavior change.
Reinforcement management is the strategic use of rewards. You reward yourself for hitting milestones, or you set up a system where others reward your progress. This can be as simple as buying yourself something you’ve wanted after a month of consistent exercise, or as structured as a formal agreement with a partner about consequences and rewards. The rewards don’t need to be large. They just need to be consistent enough to reinforce the new pattern.
Stimulus control is about reshaping your environment so it supports the new behavior and discourages the old one. If you’re trying to eat healthier, you remove junk food from the pantry and put fruit on the counter. If you’re trying to cut back on screen time before bed, you charge your phone in another room. This process also includes avoiding high-risk situations, at least in the early stages. Stimulus control is deceptively powerful because it reduces the number of decisions you need to make each day.
Why Matching the Right Process to Your Stage Matters
One of the model’s most practical insights is that not every strategy works at every stage. Telling someone in precontemplation to use stimulus control is useless because they haven’t acknowledged the problem yet. Giving someone in the action stage more information about why change is important misses the point, because they already know and they need behavioral tools.
Research on the model has shown dramatic improvements in both recruitment and retention when interventions are matched to a person’s current stage, compared to one-size-fits-all approaches. This is why a friend’s well-meaning advice sometimes falls flat. It’s often the right advice for the wrong stage.
A concept called decisional balance helps explain how this progression works internally. At every stage, you’re weighing the pros and cons of changing. In the early stages, the cons dominate: change feels hard, uncomfortable, or unnecessary. As you move forward, positive views increase while negative views decrease. For a successful shift from contemplation to action, the perceived benefits of change need to outweigh the perceived costs. The thinking processes (consciousness raising, dramatic relief, self-reevaluation) are what tip that balance.
What Happens in Your Brain During Change
The psychological model maps surprisingly well onto what neuroscience reveals about habit and goal-directed behavior. Your brain uses two distinct pathways for these. Goal-directed behavior, the kind that requires conscious effort and intention, relies on connections between the prefrontal cortex (your planning and decision-making center) and a region deep in the brain called the dorsomedial striatum. Habitual behavior runs on a separate loop connecting sensory and motor areas to the dorsolateral striatum.
When you first start changing a behavior, you’re relying heavily on the goal-directed pathway. Every choice requires effort and attention. As the new behavior becomes more automatic, the sensorimotor loop gradually takes over, encoding the behavior as routine. This is why the first few weeks of any change feel exhausting and later it becomes second nature.
Switching from an old habit back to goal-directed control depends on the prefrontal cortex, specifically a region called the orbitofrontal cortex. This area acts as a kind of override switch, allowing you to interrupt automatic behavior and choose a different path. The flexibility of these brain circuits depends on multiple chemical signaling systems, including dopamine, which helps explain why reward (reinforcement management) is so central to sustaining change. Every time you reward a new behavior, you’re strengthening the neural connections that support it.
How Long Real Change Takes
The model defines the maintenance stage as beginning after you’ve sustained the new behavior for at least six months. Before that, you’re in the action stage, where the behavior is still relatively new and the risk of slipping back is highest. The final stage, termination, is when the old behavior holds zero temptation and requires zero effort to avoid. For some behaviors, like smoking, many people remain in maintenance indefinitely without ever reaching termination.
The six-month threshold isn’t arbitrary. It reflects the typical timeline needed for a new behavior to become stable enough that it can weather disruptions like stress, travel, illness, or life changes. During those first six months, the action processes (counterconditioning, stimulus control, reinforcement management, helping relationships) are doing the heaviest lifting. After six months, maintenance still requires attention, but the effort decreases as the new neural pathways solidify and the old ones weaken from disuse.
Understanding change as a process with identifiable stages and strategies removes much of the mystery from it. You’re not lacking willpower if you’ve been stuck in contemplation for months. You’re simply in a stage that requires thinking processes, not action ones. And if you’ve relapsed after a strong start, you haven’t failed. You’ve recycled to an earlier stage with more knowledge than you had the first time through.