You've already made a lot of mistakes, given that your ex dumped you.
So don't add to the pain by digging an even deeper hole.
Follow these tips and avoid making the classic mistakes that losers in love usually make.
Whatever hare-brained scheme you had in progress to get your ex back, stop it right now, because it obviously hasn't worked.
Stop making 100 calls a day and waiting outside your ex's home and/or office and begging and pleading.
All these things only make it worse.
If you ex is still talking to you, stop fighting old battles and arguing over why you broke up and who was at fault.
The reasons you broke up are no longer of any importance, given that you want your ex back inspite of all the things you don't like about your ex.
Don't use over-the-top antics like threats and vows to hurt your self or someone else if your ex doesn't reconsider.
That's no way to put together an already troubled relationship.
What you do need to do is fix the issues and communicate with your ex and see if you can reach some compromises which both parties find acceptable.
And lastly, never, ever badmouth your ex to common friends and family - especially those close to your ex.
If your ex finds out you're going around trashing him or her, then you forget about getting back together.
In summary, don't antagonize your already angry ex.
Swallow your pride and pain and be sensible.
Don't go nuts and do the kind of things which you would never tolerate if someone did it to you.
Accept that you're partly to blame, and try to get past the issues and look at the present and the future.