There have been several recent articles about porn addiction in the gay community so you are not alone.
You may want to contact your local Gay Community Center to see if they offer counseling. Your profile does not indicate what city in CA you are located but most of the major cities have gay community centers / organizations that can provide or refer you to a counselor or counseling group that can help you.
If you are a member of a gay supportive church or religous organization or know of one they may be able to help or provide counseling resources.
There are 12-step groups for porn / sex addiction but be careful, some of these groups are fronts for far-right "gay conversion" groups etc.
I would think a good start would be to stay busy so you don't have the time view porn. Work, volunteer, join a sports team, anything, the old saying an idle mind.... As for the partying you may want to find new social outlets or try not to spend so much time in situations that can create problems for you.
Best of luck and best with working to make your life better.