Too bad we can't choose our parents (or maybe we did, who knows?).

My father was someone with lots of mental health issues and was an unhealthy influence on me. It will always be a burden.

It sounds like you are doing what you can with your situation. Perhaps you could try hypnosis if you haven't yet already. It's best, I think, if everything is brought out into the open and perhaps you still have some emotions that remain deeply buried.

Good luck.