if you click on your country location (for most North America), then click on Resources, there is a tab called "Bibliography of Student Books" You can select the Habit you want to teach or encourage and the grade level and it will give you a list of books!! Again, for Persisting...they list A Wrinkle in Time, Abel's Island, After the War, Are You My Mother, Arrow to the Sun, etc.
Also on these boards
Beautiful End of Year Letter with variations for that personal touch. Click here to see complete list of learners ($)
What a great book list about facing adversity. Great tools for teaching empathy.