Do you tend to read to the end of a chapter or can you stop anywhere?
It really depends on the book. If I am completely enraptured by it and need to get to bed, I'll find myself struggling to put the book down. So I make myself deals "One more chapter but at the end of that chapter, I have to go to sleep." Sometimes this works, sometimes it doesn't. Otherwise, I can stop in the middle of the chapter, at the end of a paragraph. I don't struggle to find my place or forget what was happening!