After a day like today I need this book almost as much as my child does. I love the title. It is so realistic. It doesn't say "If I Get Angry" or "When I Am Angry" or "I Shouldn't Get Angry." This book assumes, rightly, that your child will feel angry; it emphasizes that this is a feeling, not a state of being; it even acknowledges that there are times when anger is a fine response. However, it encourages positive ways to work through the anger - taking deep breaths, getting some exercise, or finding something fun to do (distraction!).
I hope I modeled this well at least once today. We were decorating Halloween cookies and my daughter really wanted some of them to have spider webs on them. In my rather limited decorating repertoire this was going to be challenging at best, plus the cookie decorating was supposed to be a structured activity to keep her busy while I was making dinner. Anyway I attempted the spider web but the decorating trip clogged and my attempts to clean it out didn't help. Meanwhile dinner was waiting on the stove and the twins were dancing at my feet wanting attention, too. I said, pretty calmly, "I'm going to have to stop working on cookies now. I'm getting too frustrated." Then I turned my attention to dinner. My daughter was a little upset that we had to stop, but while I finished dinner we processed it a little bit and I emphasized that sometimes when we are getting frustrated we need to take a break.
The story book follows the adventures of a cute little bunny girl as she realizes that some things that make her angry can't be fixed, but some can. She learns to get help figuring it out and to spend time talking and listening to work things out. The pictures are all darling. The text, in my opinion, is written at a great level even for children with language processing issues. The ideas take a little practice to remember and act on in the heat of the moment, but they are all solid re-regulating ideas.