Happy birthday mate.
One thing you have on your side is that you are only 19 and realise you have a problem. It might sound mad, but I would have liked to have been in that position before I did the damage that I did.
You are in a decent position because you can get a grip of it before it gets really out of hand – you dont want to spend the next few years carrying on gambling because it will come to a point where it gets on top.
Treat it as a very valuable lesson learned at a young age mate.