I turn my haters into villains in my fiction, maybe that's a form of conversion therapy.
My past experiences are woven into my stories. My ex-lovers into beautiful characters and heroines. I give them new names but in my head they are the originals, and I hear their voice tones when writing dialogue.
It is fun and it is turning adversity, sometimes, into positivity or just creative energy.
Then you'll find that you can create new characters, and love them as if they are your kids. It is that flow that personal experiences give you. Eventually you'll lose the bad ones and get new beautiful ones.