Zen Mind, Beginner's Mind, by Shunryu Suzuki

I was 19 and living in a van, camping under bridge overpasses in Colorado so I could just ski all day every day. My naive uneducated mind was formulating some sort of psuedo-hippy philosophy around the state of ecstasy reached in the perfect ride down a mountain through powder. Little did I know the "no-thought" mantra I had been inculcating was just a pale impression of this thousands year old tradition of mindfulness. When I picked this book up at a library I just sat down reading page after page being blown away by how he would describe the exact same sensibilities I had been reaching for. It was my first spiritual awakening as an adult.