Everyone who has ever had difficulty I have given them a copy of this book. And it has blown them all away when they were ready to see it.
Good emotional health is addressed in chapter three. It covers forgiveness. A person refusing to forgive only hurts himself or herself. He makes a similar point in the eleventh chapter when he writes about exercising one's mind regularly. He adds, "No matter what happens, never blame anyone--or anything--for the way you feel." The issue is ownership of one's emotions. People who feel in control are less likely to be stressed than those who feel like they are victims of other people or circumstances.
On the matter of doing something is better than doing nothing, i.e., activity is desired over passivity, consider the quote he uses from Thomas Carlyle, "Every noble work is at first impossible."
The insightful wisdom contained in this book can improve you thought life and thus enhance your quality of life. I recommend this book.