It is a powerful book that is worth reading and re-reading. It is definitely a foundational book for every Christian's library.
The only reason I didn't give it FIVE stars was because he didn't address a loss that stings even worse than death - and that is rejection by a loved one.
With spousal and parental abandonment going on in record numbers, I think there is a great need for a work (like Zig's Confessions of a Greiving Christian) on healing the grief occasioned by rejection and abandonment.
He spoke frequently about how much love there was (and is!) in his family and I loved hearing about it and I love his openess in sharing his heart with all the world, but there are a lot of families that don't have that strong anchor of love at their core, and they need healing and support too.
Nonetheless, Zig's book is a treasure. It's too good to borrow at the library. This is something you'll want for highlighting and referring back to - again and again.