Teens - Confessions

i don't really know when did everything strart.. but masturbation is a big problem in my life right know... but bigger is the pornography. one thing carried the other. I feel so guilty specially because I know that I'm doing wrong, that the One that I believe in is watching me while I'm watching porn and masturbating.. I try to change, and sometimes I feel so proud of me because I say to my self to don't do so and I don't! but most of the time I just do it anyways.. I fall again and again and again.. I need prayer, I just can't do all by my self, I need self control, purify my eyes, my mind, my heart, my soul... I heard yesterday a preaching saying that when our sexual life is wrong, we can't know God as who He is.. and my hearts desire is to get closer and closer to Him, get to know Him... but right know, in this situation I can't.. please, pray for me.