Ahhhh...books. They are my downfall. Dusty, dogeared, childhood or spine-split, I love them all. I also have a very hard time parting with them. Once I get up the nerve to get rid of some of my book cache, there is a library sale or I get a gift card to Barnes & Noble.
A big problem I see with people is the collecting of books just to show the "intellectual" side of yourself to guests and other bibliophiles. But a personal library of clean, perfect unread books looks worse than not having any books at all. Finding space for all those hard to store, slippery and heavy objects becomes a problem.
Books (unless they are rare) are very hard to sell online or at garage sales. Another option is donate them to a hospital, library, senior center or school. To declutter any collection of books, boldly go through them and be realistic about what you will actually read. Books that have been with you for life, your Bible, Winnie the Pooh or In Cold Blood should maybe be put in a special place on your bookshelf that says, "Don't bother to sort. I'm staying".
Next time, we will tackle the sad disease of magazine collecting.