"Guaranteed" is a very strong word. It's okay, though. Just admit that you overstated something, and then easily move on with your life. No big deal.

There is power and freedom in the act of letting go of former actions and moving forward, from time to time. If someone judges you for making a small mistake, maybe they are the one with the issue.

This is a lesson I'm still practicing as well, so this comment is just as much a reminder to myself.