How to Change Behavior and Habits
“Many problems observed in today’s society can be linked, directly or indirectly, to human behavior,” including debilitating illnesses and chronic conditions, such as obesity, cancer, sexually transmitted infections, and cardiovascular disease (Hagger et al., 2020, p. 1).
But making changes from existing unhealthy behaviors to new and positive ones is never easy.
“If I continue to do what I have always done, then I’m going to get what I’ve always got” (Forsyth & Eifert, 2016, p. 15). Unless we change how we behave, we are likely to get more of the same.
And you need commitment. Only you can “decide whether to allow the barriers to continue to stand between you and getting something different out of your life” (Forsyth & Eifert, 2016, p. 16).
But how do you change behavior and habits?
Many psychological theories identify the factors that determine behavior and inform the cognitive development of behavioral change interventions. They include the following (modified from Hagger et al., 2020):
- Theory of planned behavior
- Habit theory
- Trans-theoretical model
- Self-determination theory
- Social cognitive theory
- Control theory
While each theory is unique, they typically consider individual attitudes, beliefs, and environment as vital in determining behavioral change.
Habit theory
Habits can be helpful; they “permit fluent action, preserve cognitive resources for other tasks […], and ensure action is not forgotten” (Orbell & Verplanken, 2020, p. 179). As a result of repetition, habits are an essential part of being human but not always healthy or helpful.
The challenge is to find a way to disrupt the habit by removing or ignoring the trigger, inhibiting the habituated response, or replacing it with a new, healthier one (Orbell & Verplanken, 2020).
Trans-theoretical model
The trans-theoretical model was developed in the 1980s to help people reduce unhealthy behavior (e.g., smoking and drinking too much) and increase physical activity (DiClemente & Graydon, 2020).
The trans-theoretical model does not consider people to be lacking in motivation but as needing to start, stop, or change how they act, placing them on one of five stages along a journey:
- Stage one – precontemplation
- Stage two – contemplation
- Stage three – preparation
- Stage four – action
- Stage five – maintenance
For each stage, the individual must complete a set of tasks to move on to the next one. For example, during preparation, the individual must commit to change and create a change plan. During action, the plan must be implemented – problems solved – and revised as required.
This is not necessarily a linear process but rather a cyclical process, with an individual cycling through stages (Prochaska & DiClemente, 1983).
Changing environments
While individual attitudes, beliefs, and plans are crucial, researchers increasingly recognize the importance of the environment (Marteau, Fletcher, Hollands, & Munafò, 2020).
Choice architecture or nudge interventions focus on changing cues in small-scale physical environments. For example, healthy eating can be encouraged through:
- Reducing the size of plates and glassware (discouraging overeating and excessive drinking)
- Placing very graphic warning labels on alcohol and food
- Making healthy food widely available
Testing the positives and potential negatives of environmental changes involves robust laboratory and field studies to estimate effect sizes (Marteau et al., 2020).
There is no one-size-fits-all approach to change. Individuals, environments, and socio-economic conditions vary across countries and political ideologies, and we should apply theories accordingly.
Setting Achievable Plans and Goals: 5 Examples
Making plans and setting goals are popular and proven mental health interventions for behavioral change (Epton & Armitage, 2020).
Many of us will have used them in education or work-based settings to direct attention, focus, and resources at a particular task.
While there are several popular approaches, the following two are common.
The SMART Goals Worksheet and the extended SMART+R worksheet use the acronym SMART to guide goal capture and goal setting. Goals should be:
- Specific
- Measurable
- Attainable
- Realistic
- Time-bound
SCAMP is another valuable approach to goal definition. It focuses on five factors to ensure maximum effectiveness and motivation when working toward goals (Kremer, Moran, & Kearney, 2019):
- Specific
- Challenging and controllable
- Attainable
- Measurable and multiple
- Personal
Goal-setting theory differentiates between behavior (such as eating more healthily, getting more exercise, and adopting policies) and outcome goals (including building a community center, rolling out training practices, or getting a new job).
Examples of goal setting across different fields include (modified from Epton & Armitage, 2020, p. 556):
- Social inequality
By 2030, progressively achieve and sustain income growth of the bottom 40% of the population at a higher rate than the national average.
- Fitness
Race under 40 minutes in a 10 km road race by September.
- Workplace
Use the end-of-year review process as an opportunity to set attainable yet stretching goals.
- Sport
Last year’s Olympics silver medalist says her next heptathlon goal will be to break the 7,000-point barrier.
- Environment
To reduce absolute carbon emissions by 35% by 2025/2026.
What our readers think
Thank you for this well-written summary of theories, models and exercises! I appreciate the work that went into researching and writing this. It’s helpful for both researchers and practitioners alike. There were a few theories that were missing and I would love the author’s perspective on them. One is Intentional Change Theory (Boyatzis, 2006, 2008). For a summary of the theory, how it’s applied for behavior change in coaching and the supporting empirical literature, see Helping People Change: Coaching with Compassion for Lifelong Learning and Growth by Boyatzis, Smith and Van Oosten. ICT describes how adults learn, change and grow in ways that leads to sustained change vs. fleeting or episodic change. Another relevant theory is Immunity to Change (Lahey & Kegan, 2009). The concept is described in their book, Immunity to Change: How to overcome it and unlock the potential in yourself and your organization. Thank you again!
An excellent, well-written, clear, and practical piece of literature. It is empowering for both the therapist and client. Look forward to implementing the above suggestions and techniques in my life and practice.
Thank you for providing details of these theories in bite sized pieces. This is very much appreciated to get a quick overview of the theory and application.
Great piece of material that could support and help people find a better way of changing their habits and lives.
Thank you!
Thank you! Very useful I plan to implement this with clients.
These behaviours can effect you, but the solutions can be life changing. The guide and steps are a great tool to have and fall back, plus you don’t have to start of with big changes, you can start small and work your way to achieving a more better out come. BD
Great advice. “Effective behavioral solutions are crucial in managing chronic physical and mental health problems and the ongoing challenges in society from financial difficulty and criminal behavior.” This article is a good read. -Ryan