Execution gives ambition a deadline.

Ambition without a date is a permanent condition rather than a plan. Execution attaches a deadline, and the deadline is what forces the decisions, the compromises, and the eventual delivery. Nothing in an undated goal ever has to resolve.

Give your current ambition a real date and tell someone about it. The date does not have to be right. It has to exist, because the whole structure of getting something done hangs from it.