a belief you accepted at some time in your life but have
rejected on the basis of a rational process.
Make it something about your intended career. At one time, I believed that I could not learn about online publishing because I am a low-tech person. Now I realize that I am able to do it, because all I need to do is focus on a few things that I do best.
What about you? What is something you used to think you could not do but discovered that you can do through a rational process?