Celibate But Still Masturbating

Many Christians vow to be celibate until marriage. They are seeking GOD, they are fasting and praying, they are denying their flesh and bearing their cross, they have set themselves apart from the world to seek GOD's face but they are also doing one thing, a thing that some feel is ok, a thing that some think will keep them, a thing that can open a door that they thought they had closed and that thing is masturbating.