I love all the Help me Be Good Books by Joy Berry. I had a couple handed down to me from my mom and I found a bunch of the series at a used book store and bought them all! My kids love reading them just for story night, but I also find them very helpful to read when we are having a problem with a certain trait.
Each book focuses on defining what the action is, how it makes people feel and what to do about it. It helps show the dangers and destructive being careless can be. It's simple and quick and my kids love the little mouse or bunny character that pops up. The beginning shows what can happen when you do certain things, and in the end shows a much happier outcome if you try something different.
A Book About Being Careless helps show children how being more careful and paying attention can keep them safe.