What do you want to do sadhana for? The aim should not be the satisfaction of egoism: "I want to be a great yogi; I shall have so much power and with that power I shall establish myself in the world." All such thoughts must be thrown far away.
Throughout our history, the words of the Declaration have inspired immigrants from around the world to set sail to our shores. These immigrants have helped transform 13 small colonies into a great and growing nation of more than 300 people.
It is the subjective world that rules the objective. Change the subject, and the object is bound to change; purify youreslf, and the world is bound to be purified.