30 month recovery from gambling

Hi all i am new to this, i shall tell you a little of how my gambling progressed from a young age to now. It all started 15 years ago im now 28. My dad was a successful and still is business owner back then he was a really good gambler and won loads in between 13 and 18 i went to the seaside ever weekend with friends and became a very good fruit machine player so much i had a trick for around 10 to 15 fruit machines and we would go round playing them even getting taxis to find one we would win that much, then 18 arrived and the big fruit machine we would win quite alot on these too but once the 25 quid bandits went and i was older i stopped going and moved onto the bookies when at uni i used all my knowledge i had learnt from my dad doin perms on the football and winning alot from small bets, to cut this short i am now at a place were bets got in to the hundreds and my debt is around 7k i am really unhappy in myself but i should be over the moon i have moved into my own home with my gf but she knows nothing of my debt i am now at breaking point and have closed all accounts before it spirals out of control. I have surplus cash of around 400 per month so i have taken out 3 interest free credit cards for 36 months and plan to pay back 250 via direct debit and hope to be debt free and stay away from gabling for the rest of my life as the spare cash could be used to do so much more.