This book is part memoir of the author losing her husband suddenly, and part a guide to preparing for your own death so that your family isn't scrambling to figure everything out. I think this is especially good for people with spouses and/or children, but for anyone, it raises the questions of what you should put in place in the event that you die or even, if you're incapacitated. Does someone have the passcode to your phone? What do you define as quality of life? Do you have a list of all of your accounts and financial documents? Are beneficiaries set up on each of your accounts, and are they up to date? It's a tough set of things to think about, but as she says more than once in the book, the actually doing of the things isn't that difficult.