Have you seen the brook in the forest?Some creeks gradually dries up, and some creeks are gradually brought together, forming a magnificent waterfall.  Success is also the case, only the persistent efforts to achieve the final success.

I consider success has three factors: luck, hard work and perseverance.We can not control whether we have good luck, but we can do the effort and persevere toward their goals.Each person's life are unknown, I think as long as you live up to their greatest efforts, that is success.