The Happiness Code

From Author Wars - https://authorwars.com/publications/the-happiness-code-292393.html

Overview:

Title: The Happiness Code
Author: Amy Herrick
Year: 2003
ISBN-10: 0670031976
Publisher: Viking
Price: $24.95
Pages: 310
Binding: Hardcover
Type: Novel
Title Reference: The Happiness Code
Notes: 1st printing per number line. Cover artist ("Jacket Photograph") on back flap of Archive.org copy.