Try to understand that the other people in your group are sick too. Go in with blinders on to do your work and that's it.

I will however say that I have watched people in therapy groups continue to stay very sick. I tried all kinds of therapy for decades including DBT and kept having to go to hospitals, etc. I never got well.

Have you ever considered Adult Children of Alcoholics? Many people also go there whose parents did NOT drink, there was just major dysfunction.

You will make friends and find actual work to do to grab on to, some action you can take about your situation. You will find some tolerance and compassion for your sick parents. They are the same as us and the truth is they did give us some good things.

Heal. You deserve it.