All over the world, the lines of the palm on the hand are thought to be deciding the fate of an individual. There is a study describing the reading of this lines on the palm, known as "Palmistry".
Element of uncertainty is LUCK. Whenever you do some activity, you wait for result: THE OUTCOME The tragic part of the story is circumstances, time, environmental and human factors also play important role in deciding the end-point. So your proper planing, hard work and intelligent efforts are not the only factors to talk about.