Complex sentence: Ricky's childhood was recorded in a book "The Story of Davidito" and meant to be an example to other members on how to bring up their children, but later Ricky grew dissatisfied with the group and left in 2000.
Split into simpler sentences: Ricky's childhood was recorded in a book called "The Story of Davidito" and meant to be an example to other members on how to raise their children. Ricky eventually grew dissatisfied with the group and left in 2000.