After a breakup it's a normal desire to get your ex back. Often the best thing for both of you would be to get back together and to work on your relationship, to make it strong and healthy once more. However, in the chaos after a breakup it's usually not enough for just you to want your ex back. It's much more effective to make her need to get you back.
Once she's begging for you to come back you'll be in a position to control the terms of your getting back together, which will make for a happier and more solid relationship than one that started out with you begging her to come back.
So how to make this happen? The answer rests on understanding a woman's psychology well enough to appeal directly to her emotions. Once you can push the correct emotional buttons, she will need to have you back without much effort on your part. This can be done by ignoring all of the instincts that naturally come to a man in the heat of a breakup, like begging her to come back, calling her all the time, or buying her gifts like flowers or candy.
Instead, it's important to give her, and the whole situation, some space. To a certain extent you must move on with your life. When she sees this she will be moved much more than by those other acts of desperation. This simple psychological trick is one of many that can help you appeal to her emotions and make your ex-girlfriend need to have to you back.
For psychological tricks and techniques to quickly and easily win your girlfriend back after a breakup check out http://www.usagain.info/