I didn't love this book enough to give it a 4, but it probably deserves more than a 3.
Because Katie Couric has the career she has, she is able to ask famous people for their best advice. Some of it was really good. Some I could have done without. I did think reading the different essays made the "stars" much more human to me (for the most part). My favorite part of this book is that I could read an essay, put it down for a while and come back to the next one.
It would probably be most beneficial to a young, just starting their own life, person, but there were a few nuggets that could even apply to a not so young, in the middle of her life, person like me.