One of the keys to sexual integrity, is accountability.  Small groups of like-minded men, keep each other honest, in their efforts to remain chaste. Here is how it works at the University of Maryland:

Fasting trains the person to deny his body something it wants so that the desires of the body are controlled by the will — and not the other way around. In the University of Maryland group, for instance, each member of the group forgoes dinner every time any member of the group “falls.” A fall is defined as viewing pornography, masturbating or engaging in sexual activity.

These falls are discussed as part of the second pillar of purity groups, which is dialogue. As with a traditional 12-step group, open dialogue with people facing the same challenges is a huge source of help and support. Many groups sign confidentiality promises so that nothing short of criminal acts will ever be discussed outside of the group. In this community of trust, men are able to discuss challenges to their chastity and ways to face them.