1. We have no predetermined nature or essence that controls what we are, what we do, or what is valuable to us.
2. We are free to act independently of determination by outside influences.
3. We create our own human nature through free choices.
4. We also create our values through these choices.

We construct our nature or essence through our actions.

The Realm of Existentialism, a site by Katharena Eiermann
This site includes clearly outlined definitions of Existentialism and Phenomenology, themes and problems of existentialism, and contemporary existentialist writers. In the category of “angst just keeps getting easier”—it also hosts an Existentialist bookstore (with a bargain section!) with links directly to Amazon.com.