A quicky exercise from Donald Maas

Think of a scene in a book and write down the main emotion of the main character in the scene. (main character probably the one most affected by the action OR the main character of the book, the one with the biggest story arc. I wasn't there so this is a guess.)

NOW
think about TWO MORE emotions s/he'd be having in that scene. 

Now write the scene with the second one in your brain. Do that at least 8 times in a book.