[The_AK]

Hands down working on yourself is the best solution. I know that feel bro.

Got out of my first what-I-thought-was-serious relationship like two years ago and felt like chit for almost a year. I think we were dating for like 2 years or so, I don't remember. Anyways, first 6 months out was depressed and chit because I missed her and wanted her back, eventually moved on and was like 'phuck this I have real things to deal with". I thought about what it was that might have went wrong and went from there. Started working on my flaws, learning about myself, and trying new hobbies. Think of your ex as the person who restricted you from trying new things and remember that at the end of it all there's only you in this world. You come in alone and you go out alone, the others you surround yourself with are people doing the same thing. I wish my friends were a bit more supportive when my ex and I broke up. Drinking doesn't help so don't even bother. Don't get too hung up on what others think, stay productive, be busy, and pursue what it is that you want out of life.

tldr;
think less, do more

edit*
Gridlock, I agree with your point that its important to be aware of what went wrong.