Internalizing

I wonder if I internalise my emotions or I express them. Cos right now, there seems to be alot that's going on within me. But somehow I am unable to express it. It only comes out as anger, frustrations. That's not externalising it is it? Sometimes I feel that I am passive agressive. Agreeing to things on 1 hand, and reacting differently to what was agreed upon. Oh help me Lord. I need your grace!