The race is not to the swift, nor the battle to the strong, neither yet bread to the wise, nor yet riches to men of understanding, nor yet favor to men of skill; but time and chance happeneth to them all. [Ecclesiastes 9:11]
Have you ever watched a stonecutter at work? He will hammer away at a rock for perhaps a 100 times without a crack showing in it. Then, on the 101st blow, it will split in two. It is not that blow alone which accomplished the result, but the 100 others that went before as well.