Well done on looking for help.
I hope you will have been reading some of the other stories here. You will have seen a lot of stories similar to your own. You will also have seen the success stories – what are they doing that you could apply to your own situation?
How about getting yourself banned from the bookies and arcades you pass on the way home? How about only carrying the cash you need on a daily basis? If you only have enough money on you for lunch then you can’t gamble those sort of sums. You could even take sandwiches.
Try and talk to your family and girlfriend? Do they know it’s been a problem in the past? This time you wont be just presenting the problem; you will be showing them the positive actions you are taking to start dealing with it.
Keep posting and let us know the positive steps you are taking.