1. Get to the Gym
Post break-ups can be hard mentally and emotionally. Many people shut down, become removed from their lives, and just become, well, gross with it. Instead, channel your rage, your sorrow, your hate, your new found freedom into actually taking care of NUMBER 1 now, which is you. Hit the gym and burn some calories because afterwards, your body helps release feel good hormones that will help you get out of a slum faster than just moping around and eating tubs of ice cream.
2. Scrub your ex from your phone and social media
If you've ended it and things are really over (this time!), then make it so. Trying to desperately hang on to them, their pictures, waiting for them to text, call, or hit you up on twitter or Facebook is not really moving on. There is nothing wrong with cherishing the good times you had, but those will always be in your memories. You don't need constant daily reminders of what could have been or what you wasted your time on. Plus, it puts up a barrier for your future relationships if every picture you have is of you with some other guy or girl or you keep their number available and on the ready when you know where anything you do or say to them will end up--and that's not good.
3. Do take time to grieve a little
Not every relationship ends badly. You may have genuinely actually loved this person. That is not something you can "just get over" by flipping a switch. Take a little time by yourself without jumping into the next bed or relationship to really just decompress, mourn the loss of them, and let go. This will 100% help you in future relationships if you're not endlessly holding on to the baggage of your past because you haven't gone through or allowed yourself to go through this process. That being said, don't stay in this place forever. If it's been a while, and you still can't get over it, you may need to seek professional help.
4. Do reconnect with friends and family
Yup, though we all like to deny it, when we're in a relationship, we tend to become super involved with our boyfriend or girlfriend and leave everyone else hanging in the wind. The good thing is, friends and family, good ones anyway, are always willing to let you back in to the fold full time when you're down and out of that relationship. Being around friendly supportive positive people can really help get you to a good place again a little bit faster than not. Also, let them know the break-up is official and how you plan to proceed, i.e., don't be surprised if you don't see him or her at the Christmas party this year because we've broken up officially, so do me a favor and take him off your invite list.
5. Take up a new hobby or challenge
All that time you used to spend with your significant other, needs to now be channeled elsewhere. Now that you're free of them or no longer with them, fill your extra free time with something new to help take your mind off of them and hopefully meet new people who know nothing about your old relationship.