Just 40 minutes a day and not every day.
Well, its good that you can limit the time you spend in gambling. For me, gambling is just for fun and its not an activity where one must use many hours in it. An hour a day is the best time I think or maybe 2 hours.
I do enjoy gambling, but I can't say that I am gambling for fun since I am also hoping that I can win some good amount to be used on gambling, well I call it a recycle profit. I also want to say that I am just gambling some of my faucet BTCs so it don't really hurt that much when I lose them.