Life is like gamble, because it's unpredictable. And if you are too greedy you may have several losses on your life that could lead you to the ruin. But if you know how to manage your life and control yourself on different situations you can have success. I think the difference between life and gambling is that in gambling you need basically luck, while in life there are another factors that influence it and we don't know very well yet, I don't believe luck in life, but something like karma, not influenced by previous lifes, but influenced by your actions on this life.