The Breakup Letter is a tool I have learned about from the TV sitcom How I Met Your Mother. In one episode, Ted reveals that whenever he ends a romantic relationship, he writes a letter to his future self listing his motives for breaking up. In case he ever misses his ex, this way he can remind himself that getting back together is not a good idea. The Breakup Letter as a tool isn't limited to breaking up romantic relationships. It can be used just the same to end work relationships. If you e...