Find a thesis or paper topic for your favourite book.
Here are some samples:
Michelle Luchashenko Problematizing Autobiography: Too Flash and the Technologies of Bodies
And you know what, I really could write a paper on any one of those topics. I really, really could.
I stole this from Ancrene Wiseass, who could probably convince a much stronger personality than me that a undertaking a PhD is a stupid idea. But still she soldiers on, with dedication and flair.
PS: My thesis title was Australian Indigenous children's literature: texts and publication. I couldn't think of a pun. Clearly not cut out to be a Dr.