Nice advise. I agree but depends who is investing. If a person already has a lot of money why would he care then? There was a time when i used to spend a lot in gambling but realized it later after loosing a hefty amount. I remember my time so to avoid any kind of personal problem, one should take it as fun not completely become dependent upon it. It can ruin your whole life. If you really want to make money through gambling, just begin with small amounts and use that again and again to multiply. Even if you loose, you wont have any realization or pain on your heart.
I agree with you, besides starting with a small amount and making it grow gives a lot of pleasure because you'll see that you are making a better play that even in such a small amount of money you did make it grow. Additionally, we must have already a certain amount to gamble before we start so that we could avoid losing more of our money.
Its true if you can manage to do it. You have a small amount then you could never get a really big award or price just because its too risky to aim for a Hi multiplier. Its really being able to manage on what you are going to do with your money.