Hey Rowan, I'm not going to say I know how you feel, because the depression thing... I just don't identify that well. I DO understand the anger though, and the feelings of PTSD. A few years ago, I was so angry and hurt, I would burst into tears or start yelling and ranting about some random, insignificant thing that happened. It was embarrassing and frustrating, since I never knew precisely what was going to "set me off."
I did get counseling, it helped a great deal, especially with feeling like I was in control of my own life again (or maybe for the first time.) One of the things the counselor helped me to understand is that I cannot be too attached to what I expect of other peoples' behavior. My mother was never going to act like my idea of what a mother should be. My dad may likely never detach from the WT, and may always see me through the veil of WT indoctrination - no matter how happy, successful, or eloquent I could be with him. My brother... well, I love him, but he can be a bit of a jackass. Nothing I do can change that.
So I learned that the things I do, I have to do for me, because I am the only person whose actions and reactions I can control. I learned that it was okay to be angry and sad that the people I love won't see things the way I wish, but it's not my fault or responsibility. I also learned it was okay to be furious with the stupid WT organization that robbed me and my family of so many normal things.
Nobody can tell you to get over it, but you can learn to eventually make those feelings and memories more like old photographs that you can take out, look at, and remember what it was like and how you felt, but when you've looked, you can put them away and get on with today.
Lots of luck.
O