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.
It is right that you have fixed a time limit for your gambling. It is good because when you keep yourself in limits you will never be disappointed and not lose lot of money which you cannot bear. I also give just a small time for gambling in a week, because I have no much time to gambler every day and become addict of gambling. I know that gambling has no future and just a waste of time.