Listen, I have one way to come out faster out of depression for such cases. Its just like a medicine or a drug which shows its effect for some time but then depression may come again. But using this method multiple times can help u get rid of all pain for ever.
Do this... Find a place where no one will disturb you, this will work best in night time on your bed in your room. 1) Sit or lay down in a relaxed position and CLOSE YOUR EYES. Think current situation of yours which is so bad. 2) Go some time back and think of a scene which was with ur GF and try to feel pain of joy which u exp during that specific scene time. Since u got a breakup that last scene with ur GF will be a painful one, but be sure to experience it once again. 2) Still go some time back, and exp the time (you can choose any scene or moment in cronological order). This scene may be of joy which u both enjoyed. Enjoy that fully. 3) Stll go back and think of a scene, good or bad...but be sure it fits in the time. The main point here is to slowly go back in time by thinking happenings in your life w.r.t ur GF and exp pain or joy. 3) again repeat the same thing till u get to the point where you first met her amd there was not much love in ur heart for her. 4) No again go back in time when u didnt even knew her.
In all above process be sure to experience joy or pain. Once you have come to the time during which u didnt knew her at all, directly focus on present situation and open your eyes.
