Yesterday I got serious and cleaned out my bookcases ... I have three bookcases which were literally bulging at the seams. In the end I took roughly 200 (maybe more) books to the local charity store. I have another two bags for my sister-in-law to take home with her.
I have (had) books on every subject under the sun, romance novels, chick lit, mystery and intrigue through to writing, self improvement, gardening, business. I still kept probably 100 of my favourites, primarily the writing and self improvement ones which I just couldn't bear to part with.