Taz Tagore is the author of Seasons of Thanks: Graces and Blessings for Every Home. She is also co-founder of the Reciprocity Foundation, which works with homeless youth in New York.

Brenda Shoshanna is a New York psychologist, Zen practitioner and author of 365 Ways to Give Thanks: One for Every Day of the Year.

Tal Ben-Shahar is the New York-based author of Happier: Learn the Secrets to Daily Joy and Lasting Fulfillment (2007) and has taught a popular introductory positive psychology course at Harvard University.

M.J. Ryan is a consultant and author whose books include Attitudes of Gratitude: How to Give and Receive Joy Every Day of Your Life and A Grateful Heart.

Deborah Norville, anchor of the TV newsmagazine Inside Edition, wrote Thank You Power: Making the Science of Gratitude Work for You (2007), which explores the scientific research behind gratitude.

Louise L. Hay wrote Gratitude: A Way of Life. She is the owner and founder of Hay House, an international mind-body-spirit publisher in Carlsbad, Calif.

Patricia Campbell Carlson is former executive director of A Network for Grateful Living, a Web-based organization that promotes gratitude as a spiritual practice. Carlson lives in Ithaca, N.Y.

Dr. Uma Mysorekar is a former president of the Hindu Temple Society of North America in Flushing, N.Y., and a practicing obstetrician-gynecologist. She has represented Hinduism at interfaith conferences sponsored by the White House. She has written about the Hindu view of gratitude.

Gregg Krech is the author of Naikan: Gratitude, Grace and the Japanese Art of Self-Reflection. Naikan is a Japanese method of self-examination that prompts reflection on gratitude to others for what you have been given. Based on Eastern spiritual teachings and Japanese psychology, Naikan is used to promote mental health. Krech is the executive director of the ToDo […]