How do I heal myself?

My gf of 3 yrs dumped me because I am struggling to heal some childhood and past relationship trauma.. I’ve been dragging my feet a little but have been going to therapy and got on meds for my anxiety which have helped a lot but she wants me to heal more and says she doesn’t feel she can support me because she’s mad it’s taken me this long to finally do something about my anger. She says she wants to be with me when I’m healed but doesn’t know when that may be. How do I go about healing myself and working on myself when all I want is to be with her and be better with her and for her ?