When we want to change our behavior, there are 3 levels where we can do so.
Outcomes: changing your results, e.g. losing weight. Most of the goals you set are at this level
Process: changing your habits and systems, Most of the habits you build live at this level
Identity: changing your beliefs, e.g. your worldview or self-image. Most of the beliefs, assumptions, and biases you hold are associated with this level