Why is that the case?
First, it tends to be the most straightforward place to begin. Doing more of the things we enjoy is not complicated. That’s not to say it’s easy, but it’s relatively simple, and the simplest approach is generally the best place to start.
Second, research has shown there’s a big “bang for your buck” effect from getting more active. In other words, a little investment in behavior change can go a long way. Doing the right kinds of activities tends to have an antidepressant effect.
Finally, changing our behavior can “jump start” changes in our thinking. For example, we might believe, like Kat, that “nobody really wants to spend time with me.” A quick way to test that belief is to ask our friends if they want to get together. When they (most likely) say “yes,” we have evidence that people actually do like us enough to spend time with us.