Have a look at Eckhart Tolle's and Paul Tillich's approaches if you are curious. This ain't existentialism in the post-Nietzschean sense

(...though I think Nietzsche would have found it interesting)

Whereas:

Nietzsche is the more important forerunner of the Existentialist courage to be as oneself.

Tillich describes the individual who has self-affirmed in this way: “He mediates the powers of being which are concentrated in him. He has them within himself in knowledge…. He directs the course of his life”

(http://people.bu.edu/wwildman/tillich/resources/review_tillich-paul_couragetobe.htm)