block your internet 
Nothing is easy to drop, especially gambling. It is too hard for anyone to leave gambling if they are addicted towards it.
Blocking your internet will leave you left out of the world, as in today's world, internet is the most important thing as all works are being done online nowadays.
then let your ISP's block the web addresses for gambling site.
yeah it will leave you out of the world with nothing but your self, but still you have a social life, we still have a world outside we still have our family so why don't you ask them for their emotional support on your side to help you get away of that addiction.