Abstinence is for everyone, not just for monks. Husbands and wives for whom marriage means only the satisfaction of bodily passions will not be justified. They will answer before God for not having been abstinent. Of course, as the Apostle says, they are not to abstain from each other for a long time, lest the devil deceive them, but they should abstain according to mutual consent (cf. I Cor. 7:1-6). Married people should abstain from corporeal relations during fasts and on great Feast days.
+ Elder Thaddeus of Vitovnica, Our Thoughts Determine Our Lives