Maccers has written an excellent guide on how to survive a breakup. She provides concrete, practical advice, such as:

Wallow, wallow, wallow. Bore your friends shitless with constant droning.

Drink yourself into a coma and have a one night stand with the most hideous individual you can find.

Call every single guy you’ve met in the last 10 years and invite them out for drinks. Tell them you’re paying.

Beg your friends to call every single guy they’ve met in the last 10 years and to fix you up on a blind date. Tell them you’re paying.
and one of her readers provided a gem:

When he comes crawling back in 3-6 months time, sleep with him precisely once and then dump him.

Some of these things I managed to figure out myself during the course of various breakups over the years, but it's always nice to get additional pointers.
[via NewYorkish]