The absolute BEST motivation to read that I have ever been able to do, is this.
Sitting in my reading Library (Ok, it's my bathroom, who cares?) As I am reading a book that I am truly enjoying, I bust out laughing at a good part, I laugh til the tears run down my face, because the Author has described it so well that I am picturing it in my mind. My children come running to see what is so funny. I try to read them the lines that caused my laughter. It comes out gibberish, from my giggling. I am then told by them, "I'll just wait until your finished to read it myself."
The joy then comes as they are reading in their 'Library', and I hear a burst of laughter.