This is a great little read to help kids see someone in their situations and how they overcome their struggles. Most of the problems the kids face are very common, and seeing someone else process them can be so helpful - both for not feeling alone and for guidance on what to do themselves. 
Problems covered:

Parent being laid off/fired
Moving to a new home 
Financial insecurity (low grade, never food shortage levels)
New school
Strong face for younger sibling
Parents fighting/arguing 
First job
Lying to family
Keeping secrets 
Lost dogs
Working for something you care about 
Apologizing
Fear of parental divorce