As a gambling addict, you would still find time even though you've spent most of your day doing that new hobby already. You might even choose to have lesser sleep just to gamble at night. I don't recommend just finding a hobby that takes a lot of time. Any hobby can take a lot of time if you choose to give it tons of time.
I suggest that you find a hobby which is tiring and you're interested at as well. At night, you'll be too exhausted to even open your pc. You would choose to sleep instead.
It's two clicks away to block the gambling discussion and so it's two clicks away too to unblock it.
You would either (a.) look for a different gambling site that has the same game or (b.) just unblock it. I think all of these ways to stay away from gambling wouldn't work without a really good discipline in yourself.