Not only must you stay away from sin, you must also do everything in moderation. You cannot afford to sleep anytime you like, eat as you wish, or be intimate with your spouse as many times as you want. Apostle Paul said in 1 Corinthians 6:12:

All things are lawful unto me, but all things are not expedient: all things are lawful for me, but I will not be brought under the power of any.

You must remain in control such that you cannot be brought under the power of even the things that are necessary.

In 1 Corinthians 9:24-27, Apostle Paul said, “I keep my body under.” That is the apostle of the same grace that some people claim has taken care of everything, and that no matter how much we sin, it is fine. Paul said that he kept his body under, in other words, I tell my stomach when it is going to eat next and my eyes when they are going to sleep next. People have asked me how I fast for 40 days and nights, and I say, “Simple. The night before I start, I go to an almanac, count 40 days, and mark when the fasting is to end. Then I say to my stomach, ‘That date is the next time you will get food.’” The stomach will grumble because it doesn’t like that kind of situation. When you drive along the street, every restaurant on the route will seem to be calling you, and you will smell the food in another house from almost a quarter kilometre away. I don’t care; I ignore everything the devil tries. After about 3-4 days, when my stomach sees that I am not yielding, it will keep quiet. He that strives for mastery has to be temperate in all things.