Consider the implications. We think we know what we want, but we can never really know until we've got it. And sometimes when we have, we discover we never really wanted it in the first place - but then it's too late.
Alexandra Potter's book Be Careful What You Wish For is about exactly that -- knowing what we want and realizing that we never really wanted that in the first place. It is the story of Heather, who suddenly gets everything she wished for (literally) and later finds out that the thing she wanted was not what she expected it to be.
I loved this book because it had the right amounts of humor, romance and moments that made you think and reflect on the main idea of the book. I became a fan of Alexandra Potter because of this one. A friend of mine had given me her books but I never got to reading them until late last year and I really enjoy her work.