Changing Shaft and Glands sensation.

Not sure if this is true or has anyone tried it. I heard from a friend who suffers from PE. He mentioned sometimes focusing on shifting the shaft sensation helped him a bit.

He gave me an example, when aroused he felt most sensation at the tip and underside the penis shaft. He said he tried focusing on the upper shaft during masturbation and it was a bit difficult to orgasm for him. So he practiced and few months later that help him delayed a bit.

I know everyone feels differently, some feel sensation all over penis, some feel like a tube in the center not sure if this method holds any truth. Where do you feel most sensation in your shaft?