Stop being so self-gratifying ...
Stay away from porn and participate in sports or other healthy
activities that will clear your mind and control the urges.
U have to tell yourself mentally that u will not masturbate every
time some lustful thoughts enter your mind. Do the cold turkey
thing and whenever u feel "weak" just switch to a more meaningful
and interesting task like reading or listening to music. Once the
interest dies down, u are safe. Remember that u have a whole
shelf-life of sex after marriage, so why "play" so much !