If you're feeling defeated, don't rush into trying to fix it. Sleep on it. The pain will ebb, even just a little, and you won't try to do something hasty or haphazard in frustration.

Then come back to it a day or two later and try what's been suggested (or that's come to mind while you're in the shower, on the can, etc.)

Good luck. We've all been there and just remember that the only people who don't make mistakes are the ones who never try something new.