He sounded like a man on the edge of collapse, only holding himself together through a supreme act of will.

It required a supreme act of will to resume normal breathing.

One muscle at a time, as if by a supreme act of will, he resumed his stance.

It takes a supreme act of will to hold my head under the water, but this is the only path to survival.

It required a supreme act of will for him to sit still, but he managed it.

With a supreme act of will, I threw off the dizziness.

Still, it took a supreme act of will not to bolt for the door.

He was not celibate by nature but rather by a supreme act of will.

It had been a supreme act of will, because they both knew so much better.

But it takes a supreme act of faith to believe that everything will be ready on time.