If you want to change how you feel, change how you think. Use positive affirmations.
Soccer Athlete Success Evaluation (S.A.S.E.)
It takes more than quick feet to succeed in soccer. A player must be both physically and mentally tough.Take this Test
"Do not dwell in the past, do not dream of the future, concentrate the mind on the present moment."
Don't try to be perfect. Accept that you are human, and forgive yourself for making mistakes.