[minikomi]

You're over-analyzing things before they happen and not reflecting enough. Get a blank book and write down your worries with a lot of space underneath to spare. After a week, revisit the book, and see if they came true or not. If they came true, write underneath how you handled them and what they taught you, and how you can move forward with that experience. If they didn't come true, write how you overcame them without worry, or why they were silly to begin with. Do this for a few months. Revisit the filled in pages regularly.

The idea is to reframe your worries as either teaching experiences, or as silly/easy to overcome.