Palm Swirling Technique

Keep some lube at hand, not too much, just enough to keep things smooth. You might need it during, so not only at the beginning.

Get your penis erect/standing and rub your head in circles with the palm of your hand (keep your hand/head lubes just a bit, you want some smooth friction)

Dance around the head of your cock and you'll feel the sensation coming. Might feel spams and a bit uncomfortable but just keep on going.

Even when you reach the point of no return, try to keep swirling over your head with your palm. 

Enjoy!