I want to stop masturbatingso much but how do i fill my sexual urge?

Control: You have to learn to control your urges.

A little unclear: This depends on what "so much" means. I cannot tell if this is once a week, or spending hours every day at it. Depending on the actual frequency and whether it's interfering with other things you want to do, it could indicate a sexual compulsion or addiction that needs treatment and care. I suggest speaking with your primary care physician about this, with therapy referral if needed.