I have one friend who used to play dice in stake.com, he started with a very small fund ($100), out of that money, he managed to have a balance of 24 ETH at some point but unlucky guy lost everything in one day. Once again, with the bonus he got from stake, he managed to cross 30 ETH within less than a month but yesterday, he lost everything once again.
He got lucky, your friend played dice and with luck, you can easily turn a small money into something,.. good for him but he need to learn more on how to manage himself, sometimes greediness will turn our effort into nothing, even if we are lucky at some point.
How come he lost everything one day? Do most of the gamblers lose money in such way?
That's because he is not discipline as a gambler, he should learn how to limit himself, losing everything is like getting your business bankrupt that you build with all your effort and made it successful.
What happen to your friend is a good example on why gambling is called a high risk activity.