Ken Blanchard has either endorsed or written forewords for many books that advance beliefs/ideas clearly at odds with biblical Christianity. They include (but are not limited to) the following (note: information on Deepak Chopra and the Chicken Soup for the Soul series has been taken from Watchman Fellowship articles on Chopra and Chicken Soup):

• Endorsement of Deepak Chopra’s The Seven Spiritual Laws of Success (1995)—Chopra teaches that the universe consists of a single energy or consciousness; this energy is the "field of all possibilities" (The Seven Spiritual Laws of Success, p. 9). This is "pantheism," an Eastern religious belief that makes God an impersonal force, rather than our personal creator. (It is incompatible with Christianity.) Chopra also advocates concepts of Dharma and karma as two cornerstones of his seven laws. In Hinduism, dharma is our purpose in life, and karma is the law of cause-and-effect. Chopra explains the Law of Karma by paraphrasing the Bible: "What you sow is what you reap" (The Seven Spiritual Laws of Success, p. 39). But Chopra does not mean these things the way Blanchard might be interpreting them. First, there is no personal God to whom Chopra is looking. Second, Chopra's main goal of channeling one's potential or thoughts is not to honor Christ, but to bring earthly/worldly success. Third, the main "purpose" in life that Chopra is seeking to advance is personal fulfillment, not God's glory.

• Foreword to three Ellen Tadd’s Death and Letting Go (2003), Jim Ballard’s Mind Like Water (2002), and Franz Metcalf’s What Would Buddha Do at Work? (2001). Ellen Tadd is not only a New Ager, but also seems to see herself as a clairvoyant—this is occultism, which the Bible very strongly condemns. Jim Ballard advances and promotes New Age teachings, specifically those of Paramahansa Yogananda of the Self-Realization Fellowship New Age cult, which is stands in total opposition to the teachings of Christianity. And Franz Metcalf, of course, is one of the foremost promoters of Buddhism.

• Endorsement of motivational speaker Brian Tracy's book, Maximum Achievement. In chapter six, "The Master Power" (p. 179), Tracy says "many of the greatest thinkers who have ever lived have stood in awe before this power and have written about it." He continues, "Madame Blavatsky, the Russian theosophist, called it, 'the secret doctrine.'" What Blanchard may not realize is that Theosophy is one of the most anti-Christian religions in existence. It is a mixture of metaphysical New Age thought, occultism, and Eastern philosophy. The power referred to is not God or Christ, but is the inner power available to all of us as divine aspects of the universal All—again, pantheism.

• Endorsement of Robert Scheinfeld's book The 11th Element. Of this book, Blanchard has written: "The 11th Element teaches you the valuable skill of asking for assistance from your 'Inner CEO' to improve your decision making." But Scheinfeld is NOT talking about any inner CEO that could be thought of as Jesus. Scheinfeld is a New Ager who is speaking of our own inner higher self that has nothing to do with God. He teaches in his books and seminars a concept that within every person is an invisible network and an inner intelligence or Inner CEO. Of this invisible network, Scheinfeld says, "That network links all of us together at the unconscious level and stores information on what everybody is doing all over the planet."

• Endorsement of The Hoffman Process course of spiritual growth and The Hoffman Institute. In The Hoffman Process written by Tim Laurence—director of The Hoffman Institute—Blanchard's name appears alongside of Sonia Choquette (a psychic), Margot Anand (a tantric/mystic sex teacher), and Joan Borysenko (a New Ager).

• Endorsement of Jack Canfield and Mark Hansen (a Lead Like Jesus board member). In an interview for Charisma magazine, Patty Aubrey, a spokeswoman for Canfield’s Foundation for Self Esteem, confirmed that Canfield is not a Christian. "Jack doesn’t belong to any church in particular," says Aubrey. "He doesn’t believe in one particular thing." Jack Canfield has long been a New Age self-esteem guru. He formerly directed the Institute for Wholistic (New Age) Education, was past president of the Association for Humanistic Education, chairman of the board for the Foundation for Self-esteem, board member for the National Council for Self-esteem, and president of "Self-esteem Seminars," which has currently evolved into The Canfield Training Group. His current training seminars in "self-esteem" include the use of meditation (guided imagery and visualization), the New Age, highly questionable Neuro-Linguistic Programming (NLP), and affirmations. Canfield promotes meditation, centering, Arica psychology, mandalas (psychic pictures), yoga, and spirit guides (occultism).