Which books have you read that were fortuitously synched up with your life at the time? What about those that made an optimal impact only because you had surpassed a certain milestone, life experience, etc.?

When I was reading The Unbearable Lightness of Being, by Milan Kundera, I could not help thinking that the relationships that Sabina held with her male lovers, Tomas and Franz, would not have made the same impression on me if I had picked up this (absolutely incredible) novel just a few years prior; before I myself had taken a lover, begun to learn the intricacies of independent womanhood. I read ULOB at exactly the right time in my life - anyone else feel this way about something you've read?

Alternatively, are there any books that you wish you had read earlier in life? Before the dripping away of naïveté, perhaps?