The best way to remove fears, doubts is to have unconditional love. We are not able to love other person unconditionally. In the book those game of life and how to play it..there was a girl whose boyfriend intended to marry her.. Then leaved her for another girl. She went to a metaphysics teacher and he said "you are not loving him, you are hating him. unless you are unaffected by his actions, he can't come. She said I will not forgive him but after few months she forgive him and after few days he was back with a marriage proposal. I think the best way to remove fear and doubt or anger is to open heart chakra.