Hi Mg,
Welcome to the site and well done on recognising that you have a gambling addiction . I think it would be a good idea for you to leave your money at home and walk to the casino and ask them to ban you . It will be a little embarrassing but it will also mean that you cannot go there so conveniently .
The second thing is maybe you should have someone else control your access to cash for the inmediate future .
Finally is there a branch of AA near you where u could go for support .
It is a horrible addiction which leave us feeling very depressed but taking action sooner rather than later can save you a lot of pain. Keep posting and also maybe you could visit some of the groups on here .hope this helps