Just added to my next book order: What if Everybody Did That? This one should come standard with every primary classroom. The book goes through a day with a little one who does things without thinking.
You Get What You Get and You Don't Throw a Fit! - Melvin throws fit after fit when he doesn't get what he wants. He must learn how to deal with disappointment. After all, you get what you get and you don't throw a fit.