There is no guarantee of winning in gambling, after all gambling is not a career or job that requires you to do it full time. You can win a bet today, but you cannot win it the next day. If you depend on gambling for your financial needs (as a gambler) then I think you will really get into trouble.

Have fun gambling if you do, but don't make gambling a source of income because you never know whether you will win or lose. It would make more sense to trade as a full-time job instead of gambling, so think wisely.