I do not have any room in my life for people who create expectations they cannot live up to.
Never give people a second chance to violate you, no matter how small or large-scale it was.
The more credit you give away, the more will come back to you. The more you help others, the more they will want to help you.
Don't focus on trying to be 'the best'. Focus on being irreplaceable.
Even if you feel a lot more fulfilled, still don't unblock them. Don't slip back into validation-seeking mode.