Psychologist Rachel Harris, PhD is the author of Listening to Ayahuasca: New Hope for Depression, Addiction, PTSD and Anxiety. She was in private practice for thirty-five years working with people interested in psychospiritual development. During a decade working in research, Rachel received a National Institutes of Health New Investigator’s Award and published more than forty scientific studies in peer-reviewed journals. She has also consulted to Fortune 500 companies and the United Nations.