The heartbreak of living without your ex is just too much. You want and intend to get your ex back as soon as possible. Can this nightmare ever end? Unfortunately a break up is just too common. Sometimes a break up can be fixed other times it will take an awful lot of work. Are you willing to put in the work to get your ex back?
Now is the time to think really carefully about what actually caused the end of the relationship. In a deep relationship you can not pin any one event as being the catalyst to the breakup. Break ups take time and occur over many events and dates.
First off just accept the break up. This will keep things civil and help alleviate any tensions. Make sure your ex knows you are taking this seriously. If you can come across as mature about it then you have a chance to win her back.
Space is really needed at this point in the game. Personal space and physical space is what is required. Remove yourself from her life. If you share friends make sure that you are not both at the same party together or hanging out together. Keep things civil and make sure you keep a line of communication open but do not be needy or act like a door mat. None of those qualities are particularly endearing and will certainly not help you get her back.
Finally you want to have a meeting with your ex. The reason for this is you want to see where you still stand in the relationship. If your ex believes that you are sincere and that you are really trying to get back together and if she wants that too then you stand a chance. But things have to change in your life. You must be more attractive to her then in the past. Can you make improvements in your life that she will appreciate? Then do this before the meeting. You must be very prepared for the meeting by being the best person you can be.
To be really prepared to get a girl back you should rely on experts in the field. I would definitely check this resource out if you want to stand a chance of getting back together.