Based on experience with fear of failure, the best way to beat atychiphobia is to face the things you fear, gradually, accepting that failure is simply necessary for success. Break the fearful activities down into small, manageable pieces and do more and more of them until you're relatively comfortable...then move to the next larger fearful step. I was afraid of failure at sales, so I practiced, smiling, then greeting, then eye contact, then meeting people, then calling them, setting appointments, follow-up, etc. If your fear of failure involves test-taking (fairly common) take all the tests you can on things that don't matter to you until you're comfortable with the anxiety of the process. The key is to manage the fear so it doesn't paralyze you. I'm still nervous with people, but it doesn't stop me any more.