Describe one of the behavior change theories

Describe how one of the behavior change theories  (i.e., Health Belief Model, Theory of Planned Behavior, Transtheoretical Model/Stages of Change, Social Cognitive Theory) may be useful in explaining a specific personal behavior that affects your health- positively or negatively.  Describe how you think it currently applies, and how it may also be useful to promote future positive behavior changes. *Note- I want you to address how the theory in general relates, and also explain how each of the specific the theory constructs apply to your situation (this part should be a substantial portion of your written work).