Teens - Confessions

Okay,so I have been addicted to porn for around two years. Two terrible years that I wish I could have back! Two years that I've promised myself "this is the last time" two years that I've told God, "I'll stop, give me another chance, I'm sorry" two years I've done this awful thing, praying that I would get caught so it would end! I haven't told anyone yet because I'm too ashamed of myself. I feel like I should either quit or give in, and no matter what I try I always give in. Please help me! Pray for me! I need help! Everytime afterwards I'm disgusted by what I watched but I can't get rid of the urge, I'm begging you, someone please help me!