Rule your life means that we must have self-control and keep discipline. That is a necessity when we are together with a group of people. We cannot do anything what we like in our own way, and only follow the general rule of the majority. As long as we are normal, we do not feel difficult to do so.
But the most difficult is to discipline ourselves when we are alone, without any supervision and pressure from others.
A human entirely depends on his discipline and self-rule to build his destiny. A successful man will have a plan and he will go forward according to his plan through discipline.
Discipline needs persistence by which we can then complete everything in our life whether we are in study or in business. We shall not be successful in anything if we start today and stop tomorrow. But, unfortunately most people have no discipline to persist to the end. It is the human character.
For example, if we want to get up early to exercise, to learn English, to eat less for reducing weight and so on, we, in most cases, do not keep long, abandoning half way when difficulty lies on the way in front of us.
Therefore, we must have a philosophy to recognize that the world will not be smooth for us to live. We must have a stubborn mind to live in this difficult world.