Hello Friend, Good that you are seeking a help here. Rather sitting on a problem, why don't you make attempts to solve it. I am sure you are aware of  de addiction programs,  try that..  Similar try out other measures at home and outside environments to make him realize the mistakes and slowly support him in the recovery. Consult your father with addiction psychiatrist.

Yes, you need to understand yourself better rather than your father's problem... I suggest you to consult a psychologist either online or offline for a better understanding about yourself...