You might want to get professional help. As with any other addiction, getting help is the best way to go through it. Good luck.
What can I do to control my porn addiction?
Stop watching it!!!
You do the same thing you would do for any addiction .. Seek counselling, stop doing what ever it is your doing, make life changes to remove temptation and availability, that sort of thing.
You might want to see a professional counselor or talk to someone you trust to help you put an end to it.