What role does self-discovery play in existentialist theories? Tell us your own stories!

[Jafreen]

In Tina's Mouth: An Existential Comic Diary, Tina writes a diary to existentialist thinker Jean Paul Sartre, learning many lessons about herself along the way. What role does Tina's search for her own identity play in the broader themes behind existentialist ideologies? How important is that role? (if at all?) Tell us about your own journeys toward self-discovery as an example!