Everytime i get nervous or shy i get really angry ?

At who ?: This sounds like you have some pent up feelings you have difficulty sorting out. I suggest you ask your doc to find you a life coach/therapist to work with. Life often sends us challenges we don't have the skill set needed to conquer. You wouldn't try to fix a bad appendix on your own & shouldn't get stuck dealing with this either. Learn a new skill set under their guidance & life will be easier.