I am more than enough.

Enough for what, exactly? The sentence has no object, and that's the trouble — the standard being failed usually belongs to nobody. Not a boss, not a parent. Just an inherited sense that you ought to be further along by now.

Go looking for that measuring stick and it often isn't there.

You can't argue your way into feeling adequate. But you can stop apologising before you ask a question, and notice how much of the day goes to auditioning for approval nobody is withholding.