Sometimes it is healthy to give yourself permission to take a step back from everything you do with your horses and try to see it from another perspective. It would be great if you could do it from the horse's view as well as the other people that are involved with them. This book by Jane Smiley - Horse Heaven - does just that. It is funny and sad, and I'm sure you will find some of your animals and associates in her pages.
This book made me laugh a lot and I really enjoyed reading the chapters that were from the animal's point of view - the dog is hilarious - and the horses' thoughts and feelings are what I think most horse lovers would expect. It is a long book, but when you finish it you will wish there was more.