The "spirit is willing but the flesh" is a much bigger point Our Lord makes than that one night, one little human struggle.

As always, Our Lord is teaching us, is teaching you and me, a big and enduring and general and particular lesson!

You're trying to shrink Our Lord's point and lesson.

We don't have perfect dominion over our appetites and our body and Our Lord is pointing this out.

Yes, it does take practice, and grace from God, and beginning again...