When you have an emotional reaction to something, like you get really angry, go beneath the surface. There is a progression of beliefs that are behind the reaction. It is not a surface belief like "he did this to me" that you want. Keep going and uncover the base belief around this. It will be something, something false, that you believe about yourself and likely about your relationship with God. If you never dig deep into those emotional reactions, you will continue having the same reactions to the same situations, which has been defined as insanity.