I have found this book by Ajahn Amaro (Tai Forest Tradition) to be very helpful to my attitude towards mediation. While the communicated form of the meditation practice I do (which is annapana sati) remains the same, Ajahn Amaro helps me keep an eye towards a more open ended perspective to unfold. Becoming aware of "the view of the view" is one thing I remember from the book.
I highly recommend it.
You can download it at.
http://www.abhayagiri.org/index.php/main/book/138/
Metta
Gabriel



