Instruct: Classify the given review into positive or negative sentiment.
Query: Giving it your all.

I am a CEO of a successful company. Many years ago I took to heart Budha's words "We become what we think." I became a student of creative thinking, and have committed myself and my organization to optimal thinking. This has led me to an awareness of the energy level of my organization. Energy is a basic aspect of existence that is not well understood in relation to corporate performance. This book discusses individual and organizational energy, and provides a meaningful link to corporate performance. I recommend it.