First of all, I'm truly sorry for your experience, and find it tremendously courageous of you to confront these issues with yourself and the people around you who are responsible. I am currently in therapy - have been for about 5 months now - and recently stopped smoking marijuana altogether (I was smoking everyday, all day, for about 5 years). What I noticed is that I was finally able to connect with every emotion my body was trying to experience, including anger... well really, mainly anger. It's been very difficult to understand this anger, and where I should direct it. I'm still trying to figure out anger as an emotion, since I was never able to experience it as a child, as it always led to abuse of some sort. One thing I realized (today in therapy, actually) was that I'm frustrated, and the frustration I am experiencing stems from the fact that I accept that my family members are unwilling to change or do the work toward self-knowledge, but that I will not accept that they COULDN'T change - if I'm capable of changing, just about anyone is capable of changing. I find myself unable to feel compassion for them, because I was doing so much work to better myself, and yet they saw it as I have problems to fix, and not "We caused you to be this way."
The problem is this still hasn't resolved my anger, but at least has allowed me to see the roots of my frustration with them. And I have noticed that I only become angry when I talk to them about my childhood. I don't know that I can offer you any words of advice or guidance, but I can offer you compassion and empathy. I will say that I have noticed that things have to get worse (internally at least) before they can better. Ripping the duct tape off your mouth is painful and stings for a time, but your mouth is free, and expression can finally happen. Keep working, and find time to feel empathy for yourself!