"That each of you should learn to control his own body in a way that is holy and honorable, not in passionate lust like the heathen, who do not know God." (1Thess.4:4,5)
The Bible doesn't specify general methods of self-control and purity. On the other hand it specifies purity as mandatory. But, with regard to the question, "How?" it doesn't provide any set of instructions, but it desires that EACH WOULD KNOW AND LEARN BY HIMSELF HOW TO POSSESS HIS OWN BODY. Perhaps, what works for one may not work for another. And, the danger exists that one may get tired of listening to this or that and trying what one says and what another says. Of course, there are a number of books that try to suggest some techniques, and there are courses too that claim to help in this matter. But, the Bible doesn't seem to anticipate such positively. In fact, it has a negative view about some of these commandments of men (Col.2:23).
On the other hand, the Bible desires every person to become mature through proper exercise of his/her moral faculty, and have discernment about what is right and what is wrong (Heb.5:14).
In summary, human generalizations of methods and techniques may only add to the rule book. And, the Law can't purify. But, someone in pursuit of holiness is called to know how to possess his/her own vessel in holiness and honor.