I don't know anything about your experiences so don't take this as an attempt to defend them but I've been told that the mental health field has a substantial amount of people who suffered or suffer from mental health issues and to some degree their pursuit of the career is an attempt to understand themselves better.

My mom is an alcoholic and also formerly a psychologist and I’ve heard that from her too. Her early childhood bore many of the traumatic experiences that this article warns damage childrens’ brains.