Suggest me a book with good character development and something that give me hope

I want to read something positive that makes me feel good like the characters can go through all the hardships that breaks my heart but makes me root for them but at the end has also the theme of hope. Some recent books I have enjoyed with are Tress of emerald see by Sanderson, the answer is no and anxious people by Fredrick backman. I enjoyed these because they were light but heart warming read. But now I want to read books with challenges and more character development . Any suggestions please?