Three
As long as his addiction(s) is active do not expect him to act in a "normal" or sane way. I was a high functioning alcoholic. A high level, high demand job, 3 kids in college, 70 hour weeks.
But when I got home and started drinking to medicate, all of that disappeared. My behavior, and I don't mean just superficially, was controlled by allcohol. Hiding, denying, lying, anything to keep my alcoholism "safe."
That doesn't mean however, that you have to accept his insane behavior. You are wll within your rights to set boundaries.
You say that you don't "feel better" after reading your replies. DUH...? You have been dealt a very difficult hand-one that you didn't ask for. One that you cannot control.
Take care of yourself first. If you are in school, consider speaking with the counselor. Talk to Mom. Go to alanon or alateen. This isn't your fault, but you need help, support, love, and knowledge. You don't own your Dad's issues.
warrens