What I took away from my time as a Navy SEAL Sniper Instructor and applied to life.
1. Mental Rehearsal
Practicing in your mind can be just as powerful as practicing in the real world. I was taught this by an Olympic Gold Medalist and it works. Every beginner has a low self image until they prove competence in the skill they are learning. Practice to build competence and this includes closing your eyes and practicing in your head.
TRUE STORY: There was a navy pilot who was captured in the Vietnam war. He played golf in his head for over four years in brutal captivity. When he was released and played golf for the first time he shot par. People were stunned. "How is this possible?" He replied, "I've been playing perfect golf in my head for four years. Have been hitting perfect shots in my head the whole time!"