How can i stop masturbating?? im 15!?

I am 15 years old, guy, think am bi coz i like to watch gay porn, not much straight. But i believe i can improve my straight part. Anyways, i realized masturbation is taking much of my time, when it shouldn't be, and i really hate watching porn, in the moment its nice but rather its disgusting. Stopping masturbation will improve me, and put my gay side in the shadow a bit. I accept myself for who i am, so don't go around saying am not, but i just got bored of all of this....i want a gd way, i tried a lot, but eventually i fall into Aphrodite's lap...