You can’t prevent every possible thing from going wrong. Don’t even try. Instead, learn to deal effectively with minor problems. You’ll build self-confidence, which will lead to an increased willingness to take calculated risks. (Similarly, you can’t make everyone like you. It’s foolish to try.)
Be skeptical — but keep an open mind. Don’t believe everything you hear — from others and from your own internal self-talk. Practice healthy skepticism. But keep an open mind. Don’t automatically assume that everything is fake or false. Do your best to analyze the things you see and hear to determine whether they actually make sense.