There are several things I really like about this book that offers children in grades 2-4 strategies to deal with worrying. First, it uses humor which is generally useful for children who have the "what if" thougths a lot. Second, I like dividing worries into those the individual can control and the ones they cannot (like what others will do). Finally, I like the worry hat as a place to put worries that children cannot control. I am not sure labeling anxiety as the worry flu was a good idea. Most experts in anxiety want the child to label the anxiety, name it, and talk about it as something external to them (example, worry monster). I read this book with a number of children and groups this week and each time I did not like the phrase "worry flu." It sounds like the child with the anxiety has a sickness. I will still use the book but not emphasize that part and at times even sure that I think there are better ways to label worries.