I often wonder how people write autobiographies. That wonderment often boils down to my curiosity of how life plays out. How does one go about living a life interesting enough to write about?

What is it to live a life full of intrigue and well meaning? I haven’t lived that much of life but there are so many people my age or within margin that have already lived such extraordinary lives. I feel like I’m playing a game of catch up with a future I can’t even see.
How do I live an extraordinary life worth marking down in the books? How do I reach a point where I feel confident enough to write it myself?
I often wonder how people write autobiographies; do remarkable lives just happen or are they fought for? Am I fighting hard enough? Am I fighting for one at all? What does it take for a life to be incredible?