I will succeed.

Somebody will hand you a definition if you don't write your own — usually one involving a title, a number, and a quantity of other people's approval.

Worth putting on paper what you'd actually accept. Work you don't dread on a Sunday evening. A Tuesday you'd be willing to live several thousand times over. Enough money that the question finally goes quiet.

Defined like that, this becomes something you can steer toward and eventually notice arriving. Left undefined, it stays permanently one pace ahead, and you can hit every target given to you and still feel behind.