Take three and pay for only two with coupon TRIPLEEN Buy 3: 50% off the 3rd with TRIPLEEN50 Second-hand books by Kevin Leman from £10.09 | HamelynKevin Leman is a renowned American psychologist with a prolific career spanning over 130 published works. His most iconic book, The Birth Order Book, explores how birth order deeply influences our personality. Throughout his career, he has focused his work on fundamental topics such as parenting, marriage, and applied psychology. His approach combines psychological principles with a Christian perspective, offering practical tools for daily life. Born in 1943, he has spent decades helping families better understand their internal dynamics and personal relationships.