In the United States, Derek Medina, the author of the book on family harmony "How to Preserve Life, Marriage and Family through Communication", shot his wife and posted a photo of the corpse on Facebook.
Dale Carnegie, author of How to Win Friends, has died.
Benjamin Spock, the author of many books on the upbringing of children, his own sons wanted to hand over to the nursing home.
Korean writer Chwe Yong-hee, author of the best-selling book How to Become Happy, has died from depression.
Per that’s all you need to know about different types of personal growth training.