Yes, without controlling our emotions we can not make profit from gambling even in long run.
But mostly people get more greedy in long run.
I thing you are not gonna profit because of greediness and that will cost you badly, long run playing dosen't mean you are playing it then you are gonna profit forjust one day, long run playing in over a year and not making it just a one day play is gonna make you profit, so don't be very greedy control what your gonna bet.
I do believe that long term gambling makes you more mature and gets experience how to play, first i was loosing in bustabit.com site but after so many months i new the strategy of winning and now i have covered all my loss and made a decent profit, like this i have even seen some players loosing above 20+ btc but after long playing they are now 10+ btc in their account this is what we tell long term gambling makes you mature to play and you can win if you play properly.