Excellent introduction to ACT. I've been much more familiar with CBT, and I appreciate the way that this is simpler. And maybe more realistic. I think blending the two methods might be the key for me.
I read this as part of a book club, and appreciated the exercises and meditations that came out of it. I think that the title is a bit misleading, though. This isn't a book just for when something terrible happens, but for when all the little things happen.