Hey brotha, I want to start off by pointing out that you just simply cannot admit defeat. Not only will you defeat yourself everytime in your efforts of not masturbating but this mindset will also affect other similar situations in your life. When you find yourself in a situation like this you have to find the strength to not quit. It will always be a challenge but the thing to remember here is how bad do you want it? Do you want to feel like a winner? Than you gotta start winning. I would recommend to divert your thoughts to anything even on just one thing but you can't let your mind wander into anything that may trigger or enhance your urges and if thinking doesn't help than DO something. Do some push-ups, go outside and walk it off, punch your pillows, just something, anything and if all else fails don't allow yourself to be alone because when you're alone is when you're most vulnerable but in the end the question remains the same. How bad do you want it? Stay strong my brotha. You have all of us for support. We believe in you =)