Everyday my friend gambles with his money as same with his life and he always gambling throwing away his money for nothing but losing and the worth part of it is he owes me money 
if there is anybody who is gambling this way, then it is obviously a waste of time and a lot more harmful than you may think because this way of gambling will lead to addiction and a lot of money loss and you should start helping your friend stop right now before it is too late.
This is so true. Seriously, guys, never risk more than you can afford to lose. Gambling, investing, starting a business, whatever: if you can't afford to lose it, don't get involved.