All you do is:
Before a shower, write your worries on your arms, legs, hands, etc. Make sure this is in pen or washable marker, so it washes off easily. After you write them, take a shower and make sure to wash the writing off completely. Picture all your worries washing down the drain as the writing does. Repeat:
"O Powers, Please help Thou,
Worries hath come, but please not now;
Make the anxiety go away,
Needn't it come back, any other day."
This spell should restore confidence in yourself and hopefully wash your worries away.
Let me know if it works out.
"The wisest mind has something yet to learn."