If you could send a letter back through time to your younger self what would that letter say? In this inspiring new publication "What I Know Now" forty-one famous women from diverse fields write letters to the women they once were, filled with the advice and insights they wish they had then. Honest, wise and compassionate these letters reveal rare glimpses of the personal struggles and triumphs of celebrities from Madeleine Albright and Macy Gray to Maya Angelou. Click here to read an extract.