One of the most important challenges in our daily lives is to stop our mind from thinking. It is like a continuous machine. Working all the time - without any fuel, without any energy, and without any control. It just goes on and on and on producing thoughts, one after another. Even if we do not want a particular thought or an impression in our mind, it still comes. We start with something, and wander off to something else, effortlessly. Mind wanders our thoughts in unimaginable ways.