One way to understand existentialism is as an attempt to find meaning in a world that’s lost its faith.
By situating my own thinking within a broader historical tradition, I can see more clearly how my particular concerns and preoccupations are mine rather than just the objectively and timelessly important ones that all people with philosophical inclinations might turn themselves to.
The position that I have free will seems untenable for anyone less mighty than God. The position that I don’t have free will seems so far from being right that it isn’t even wrong.
Which stories we tell, and how we tell them, goes a long way toward articulating who we are and how we understand ourselves.