Time does not heal

I was once told by someone that the death of a child becomes deeply personal over time.  I didn't really get it at the time but I know that I do not talk about my son - it is too painful - it is how I go on but I know that it is eating me up inside - I have had counseling - grief with a group and individual therapy.  Helps for a while but lately I am mad as hell.   I don't even know what to do with this anger.  Anyway I haven't been on here for a while but i wanted to thank everyone for the hugs and the messages.