If we do both our concentrations will be splitted, would be better to choose one of them. No doubt we know if gambling is great ways for making money fast and trading is good too, just for this it takes knowledge and patience to make a profit.
That's stupid. Why the hell your concentration will be splitted? Oh, I need to do 2 things, that's sooo haaaard, better to do nothing.
I agree, you can do both and there would be nothing wrong with it. You can always play and invest at the same time. Just make time for each one and don't really do it "at the same time" like at 1pm you gamble and invest at the same time. That would really cause a lot of problems if you do so. Schedule a time for both and you'll be fine.