I can relate to this. It's very difficult to go above and beyond as a parent when you know no different. It's like an entirely new territory. Personally I begin to feel guilty if my parenting isn't up to par with above and beyond...if I remind myself of my distant mother then I feel I have failed. My kids are still babies, I'm learning as I go along.
I'd say anybody could benefit from psychotherapy, it's about understanding ones self. I don't receive therapy, but if I had the means in doing so I most definitely would.
Don't worry about feeling guilty when it comes to revealing the rage while in session. He probably wanted this from you, expression is better then suppression....it's healing.