Children's Books About Feelings

There are a number of great books available about children and their feelings in general.  

Jaimie Lee Curtis' books - Today I feel Silly:

and When I Was Little

I've  already mentioned Kevin Henkes - who has several books about children and anxiety - but he also addresses other feelings, like anger in Lilly’s Purple Plastic Purse,

And  Sibling Rivalry in Julius Baby of the World.

Nancy Carlson is also great, with many titles, including I Like Me, Harriet's Recital and How To Lose All your Friends:

For a book more specifically about friends I also like Bob Kolar's Do You Want to Play?