What can you do?
Give yourself at least one full weekend to cry your eyes out, eat junk food and lie around on your couch in a broken-heart coma watching sappy movies or a kung-fu marathon.

If you want to be alone now, be alone.

Whatever you do, don't call your ex.

I'm not saying you should never talk to your ex again, but give yourself at least a month or so to build up your ego again.

If you think you might be tempted, by all means, invite a friend over to run defense and keep you away from the phone.

I know that's tough right now, but it truly is necessary.

Grieve for what it was, and consider it dead and gone.

After your first 48 hours, it is important to get off the couch and take a shower.

Not just for hygiene reasons, (but trust me, by this time you'll really need it) but because it's now time to start taking action.

Take down all photos that include your ex.

If you need to have a ceremonial snapshot torching, by all means, go ahead.

Put all reminders of your ex (letters, gifts, photos, etc.) in a box and stuff it way in the back of your closet, or better yet, your garage - someplace you won't see it on a regular basis.

If you feel yourself starting to idealize your ex, and feel the desire to call him or her, sit down immediately and make a list of all the things about your ex that really annoyed you - the more humorous, the better.

The psycho-squirrel noises she made when she laughed.

Make plans with friends for every Friday and Saturday night for the next month, and stick to them.

You need those happy endorphins that exercise brings.

Keep your plans with friends every weekend, and by all means, do something physical, or humorous, like going to a comedy club.

Work out (three times this week, and for the rest of the break-up survival period), go rock climbing, or dance like the Backstreet Boys in your living room (nobody will see you.) Get your heart rate going.

You should be focusing on taking care of yourself right now.

Make two plans: One plan for a vacation (even if it's three years away,) and one plan for your life.