from The Stories We Live By: Personal Myths and the Making of the Self, by Dan P. McAdams:
If you want to know me, then you must know my story, for my story defines who I am. And if I want to know myself, to gain insight into the meaning of my own life, then I, too, must come to know my own story. I must come to see in all its particulars the narrative of the self--the personal myth--that I have tacitly, even unconsciously, composed over the course of my years. It is a story I continue to revise, and tell to myself (and sometimes to others) as I go on living.
I thought that those of us who write about our lives in pubic blogs could appreciate this perspective. No, we're not just wasting time here.
I also want to pass on this resource: Story Circle Network.
(edited to add link)