By learning. There are many ways to learn, but at the most basic level, you can learn by asking questions, observing, listening, and reading. There is much knowledge to be gained, you must only be open to it. In my opinion, the pursuit of knowledge is the greatest calling of all. Learning opens your eyes and sharpens your mind. Gaining knowledge should be the number one priority in your life if you wish to leave this earth as a better person than when you entered it.