How do the monks/Aghoris/priests suppress their urge to 'please' themselves?

The only way to suppress bodily urges is by replacing them with the higher taste of the soul. And the soul is only satisfied by a connection with Krishna. The sex-urge is probably the strongest instinct of the body and mind, although by satisfying such urges, one doesn’t satisfy the self.

The present age of Kali is characterized by a strong affiliation of ourselves with our body and its culture. Therefore frustration is wide-spread, because no matter how much we satisfy the body, we do not satisfy ourselves. In fact, the more we engage in sense-gratification, the more frustrated and unhappy we’ll be.

Now, most monks and priests have no spiritual knowledge, they actually identify with their body, and therefore they have no ways to combat the natural bodily urges inherent in all living entities. This can only be done by acquiring a higher taste, a taste that comes from connecting with the real self, the soul. And this can only be accomplished by becoming initiated into a genuine process of spiritual knowledge.

So it’s not really a question of suppressing bodily urges, especially the sex-urge, it’s a question of replacing those urges with something higher, namely the satisfaction of the soul in connection with God.

Krishna says:

Even a man of knowledge acts according to his own nature, for everyone follows the nature he has acquired from the three modes. What can repression accomplish? —Bg 3.33

Srila Prabhupada explains:

Unless one is situated on the transcendental platform of Krishna consciousness, he cannot get free from the influence of the modes of material nature, as it is confirmed by the Lord in the Seventh Chapter (7.14).

Therefore, even for the most highly educated person on the mundane plane, it is impossible to get out of the entanglement of maya simply by theoretical knowledge, or by separating the soul from the body.

There are many so-called spiritualists who outwardly pose as advanced in the science but inwardly or privately are completely under particular modes of nature which they are unable to surpass.

Academically, one may be very learned, but because of his long association with material nature, he is in bondage. Krishna consciousness helps one to get out of the material entanglement, even though one may be engaged in his prescribed duties in terms of material existence.

Therefore, without being fully in Krishna consciousness, one should not give up his occupational duties. No one should suddenly give up his prescribed duties and become a so-called yogi or transcendentalist artificially.

It is better to be situated in one's position and to try to attain Krishna consciousness under superior training. Thus one may be freed from the clutches of Krishna’s maya.