I used to get frustrated and angry when I made a bad shot, swearing and slamming the club into the ground. No not every bad shot but maybe once or twice in a round. When I threw a club it was time to do something, it was embarrassing. I quit letting my emotions show, (don't let it out). Once identified this was not difficult.
Some weeks or years later I realized that I liked golf better. I had achieved the second step. (don't let it in). Today I accept bad shots and laugh at myself.
Learned it on the golf course but it applies to woodworking and many other activities