Louise Hay. The Secret to Being Happy in 21 Days: The Mirror Work Technique.

“The Secret to Being Happy in 21 Days” is one of Louise Hay’s bestselling books based on affirmations. It is a collection of 21 days of practices designed to help you learn to love and respect yourself. According to the author, affirmations spoken aloud in front of a mirror can be especially effective. The mirror reflects your attitude toward yourself and your feelings. Mirror work helps you build the most important relationship in your life — the relationship with yourself. The book is intended for a wide range of readers.