The tip of my finger - the one I tried to cut off last week - was healing nicely. I decided that it no longer needed a band-aid for protection.
And then yesterday while dressing for the gym, I caught it on a sock or something, and tore the whole thing back open. Blood running down the hand, that sort of thing.
This is only worth noting because it's going to heal somewhat uneven - I've got a small flap of skin (where it doesn't line up quite right) that hang over the fingernail. That's going to have to be trimmed away, eventually.
So when I'm 60 and my finger is missing a chunk of skin, I should remember that it all happened because I used a dull knife. And because I had trouble putting on a sock.