My own experience has been focusing on the good in life has helped immensely, for some people this may include faith (my own beliefs aren't certain), and how that is practised in daily life - for others it's more a case of leading a life in line with their own values.

An example of this could be becoming involved in your local community, helping others in ways you can. It could be helping people or animals, or maybe conservation work to help the local environment. I don't know if you have spare time, but even a few hours can be enough to make a positive difference.

I don't think this would get rid of anger towards those who have hurt you but would be a way of focusing on other more positive things.

Dealing with angry emotions, well I am no expert and again this is just my experience, I would acknowledge those feelings, maybe express them by way of a letter that you never send - that has helped me. The breathing tips given above sound great too, and yoga can be very helpful (again it works on focusing the mind).

I am assuming (& hoping) that you are out of the harmful situation now, so reminding yourself that was then and this is now, you are no longer a victim, you are safe and no longer at risk of harm - they have no power over you now.