Change has a funny way to play with us and expats would probably be the ones who really deal with lots of change.
First book: title Who moved my cheese? an easy to read simple story about how to deal with change. Puts things in perspective in a very simple way. A favorite of mine.
Second book: title: SUMO, Shut Up and Move On. A little bigger that the 1st book but absolutely excellent. Goes much deeper in understanding how to get going when dealing with change - a big part deals also with emotional intelligence. This book is a gem.
So if you need to take a few steps back when the tough gets going, any of the books will offer a great read with lots of inspiration to rebound and do the right thing.