Here's my 2 cents: Yes, the WTS did you wrong, yes it's hard to overcome, but, it can be done. And depression and anger can be overcome as well. For some it takes meds (if one does not work, there are many others), for some it takes therapy of some sort, for others it takes a bit of both. I understand they can be expensive, but you absolutetely cannot afford to go on living life miserably.
A good book I've recommended many times is: Feeling Good by Dr. David Burns. He deliniates 10 negative thinking patterns we can fall into and how to change those patterns. However, if you have an underling chemical inbalance, you will need meds . I speak from many years of experience managing my own issues, and I too was raised a witness and feel the WTS stole my childhood.
Please don't let more of your precious life slip away in an unhappy state of mind. Don't give up, you absolutely can be happy.