A shelf for the child with a big temper, the one who roars, kicks, slams doors, or goes somewhere they don't mean to go when they're mad. These books do three things: they name anger out loud, they show it happening in the body, and they show the way back down to calm. You pick the one that fits your child right now, by their age and by how their anger actually shows up. Grumpy Monkey is the gentlest place to start.
Any single book here delivers the whole promise on its own; the trick is matching the book to your particular child. Pick by two things. First, age: the youngest children land best with the short, funny ones, and the four-and-ups can sit with a fuller story. Second, and more useful, pick by how the anger shows up. If your child explodes big and physical, all fists and roaring, the books that draw that storm plainly will feel like a mirror. If your child is more the simmer-and-brood type, the quieter, breathe-through-it books fit better. Grumpy Monkey is flagged as the gentlest way in, a funny book about a bad mood with no real fallout, easy to hand to almost any child. From there, follow your own child.