Hi TS..
I'm sorry to put it this way, but as a woman, I do think you have been taking your gf for granted for way too long. For her sake, I thank God that she is doing something for herself.
Most people do not know this, but not all women need their men to be rich with the 5C's. What they really want is a man who is not complacent, who bothers to strive to be better, so that they can see a future with him.
Fair enough, you seemed to have hit a rough patch in your career.. but the way you treated her is inexcusable. You should be lucky that she agreed for a cool-off period and not a "this is it". Do something about your life - enrol for a course to upgrade yourself, take up a sport.. Instead of spending your money on drinking your life away, you can spend it more constructively.
All the best to you..