I get this if I hold back too long and seem to go past the point of no return. Either mentally or physically take a break and start the build up again?
Perhaps you are in too much control, too tired, not getting the right kind of stimulus or just got things on your mind?
However another way of looking at it may be to see it as a high plateau and not the pointiest peak? The view from the top is just as good but goes on a lot longer?
I find distraction- by anything does it to me. If im alone, but tired.......With a partner- but concentrating on pleasuring them.....etc etc. Embarrassment is also a major issue. Having been a Catholic schoolgirl I still get really embarrassed when I orgasm- sad & pathetic but true!
However, in the last week I think I've started to overcome that problem. I also had a bit of an epiphany when I was really close to the edge, but playing with my partner trying to please him. I found myself stuck on that plateau-until I said "Right, Im going to relinquish control, lay back & just enjoy what youre doing to me..." He replied "Good!" And within seconds.....Kaboom!