Sometimes you probably wonder why you ever got into a relationship, with your now ex girlfriend. You hurt her sometimes, and she did the same. You fight, you cry, but in the end, it all comes down to love. The problem is that when a pair breaks up, they only tend to dwell on the good things in the relationship, rather than the relationship as a whole. So instead of evaluating the relationship completely, they simply eliminate the bad bits and then think they are in love. You need to evaluate the good and the bad, and realize if this is really what you want - don't get back with your ex girlfriend because of habit.
The emotions that you feel now, are probably the worst you have ever felt in your life. Throughout the relationship you may have experienced lack of commitment, confusion, frustration, anger, happiness and tiredness. The difference is that at this point all of these emotions combine forces making a lot of people confused and depressed. Ensure that you don't resort to the likes of smoking, binge drinking or binge eating, because that will just be another journey you'll have to take in the future to rid yourself of the habit.
Sometimes it is good to get some relationship advice. This could be in the form of reading a few articles such as this one, or it could mean taking things a few steps further. This might mean paying for some expert advice. Some experts work offline and online, which means if you don't have the time to visit them in person, you still can have access to their information!