Most people do it by having a child. But that's the big one. Every little thing you choose to attempt for your own satisfaction or advancement, or to fulfill your values, every action of self-improvement; these are all ways to create purpose in your life.

The fact is, you're alive. Any attempt to live your life to its fullest is the pursuit of purpose for the sake of your own life.

"Purpose" is a human-created concept. All purpose is created by someone, and there's no reason you can't do the same.