You fool. Stop while you were ahead!
You mean, stop while I AM ahead??? Why the *** would I do that. When Usain Bolt has ahead of everyone after the 60 yard mark, why would he want to stop if he's clearly ahead and about to win???
The saying it redundant. And clearly not a very good one. The only way to stay ahead, is to keep on going and continue staying ahead.
And I shall continue to do so.