You are a human being choosing to play/coach a sport and perform. You are not your sport!! Know this and have to freedom to go ALL IN and live with the results.
Results and outcome are completely OUT of your control. If you could control making shots then you would never miss.
Go all in with what you can control. Great attitude, tremendous effort, and focus in the present. Own that and you will give yourself the best shot at getting the results you want.