“What do successful people have in common? Scientists have studied the traits, beliefs, and practices of successful people in all walks of life, but their research most often winds up and stuffy academic journals to be read only by other scientists. Now, the best selling author of the 100 Simple Secrets of Happy People has collected the most current and important data from over 1000 studies on success, and spells out the key findings in a way we could all understand.” An inscription is in the front cover, but otherwise no markings.