“Me, My Hair and I.” Edited by Elizabeth Benedict. Algonquin. 336 pages. $16.95. Truth and wisdom do such a delightful dance throughout “Me, My Hair, And I” that you finish the essay collection wondering why we don’t spend more time, not less, obsessing over our tresses. “Ask a woman about her hair,” writes Benedict, “and she just might tell you the story of her life.” Benedict, an Iowa Writers’ Workshop coach and the author of five novels, did just that, gathering essays from a diverse group of 27 female writers, including Anne Lamott, Jane Smiley, Maria Hinojosa and Suleika Jaouad.