I have had an abusive past. I believe I'm too forgiving because of it. How do I healthily maintain boundaries with my past abusers(still in my life) and in general?

In general you should think about what makes you happy, and to tell yourself that you are a survivor. Take small steps of self care routines, like trying to do new things to step out of your comfort zone. Whether if your abuser is still in your life or not, put yourself first because life is amazing just try to explore it by yourself. The past doesn't define who you are, it is based on if you want to make a change in your life. Forgiving isn't bad it shows a lot about your character, which is being a good person. That being said, Self care will help you mentally and physically.