A book with little to no action in it

I read "For Whom the Bell Tolls" a few years ago, and I still think about how totally interminable that book was. While I have come to have a greater appreciation of minimalist prose (more minimalist recommendations are also welcome), but I found that book's pacing so slow, that it took me 2 months to finish the book.

I know that it's me, and want to be able to appreciate Hemingway. I would like recommendations that can help me learn to appreciate slow-paced books in which nothing happens.