he had done all that he could do to save himself

“Piglet is Entirely Surrounded by Water” by A.A. Milne:

Really, it wasn’t much good having anything exciting like floods, if you couldn’t share them with somebody.

“…There’s Pooh,” he thought to himself. “Pooh hasn’t much Brain, but he never comes to any harm. He does silly things and they turn out right.”

Then suddenly he knew he would never see it again and that he had done all that he could do to save himself.
“So now,” he thought, “somebody else will have to do something….”