Oh Brother, Oh Sister! by Brooks Whitney (1999)

I bought this book for my six year old daughter who is easily annoyed by her 5 year old brother. I think she read the book front to back the first night. It gives good suggestions for dealing with common conflicts but the part of the book that had them most impact for her was the section Top Ten Things our brother or sister does that annoy us. She read down the list and realized her brother doesn't do any of them!!! So along with giving good advice it also helped my daughter view her brother in a more positive light.