Really its about moving energy away by moving attention to other parts of the body as well. For example, if you are focusing on how good your penis feels, it will lead to ejaculation. If you say to yourself "it feels good all over my body" then you are sending that energy all over your body as well. Feel how good your hands feel, how tingly! Feel your feet. Do this and continue to stimulate you get the point, and it WILL lead to MMO.
It gets easier with more edging practice and kegel control. Doing this regularly along with ballooning can also lead to gains as well as enhanced EQ, flaccid hang, and overall ability to achieve erections!

It trains your body to "accept pleasure" rather than quickly releasing it like a horny teenager