Hi Harry,
stick with it, im in basically the exact same position as you! I decided just before Christmas to stop the stupid gambling. I was on a massive downward spiral, losing thousands at a time – some times 5k plus on 1 day. I have had urges since but have resisted! keep your mind busy doing other things and when you do get an urge remember how crap you felt when you last lost!
all the best mate,
H