IMO Tony's personal life is of little importance to the value of his products, except possibly the material he has on relationships. Even then, his advice is not necessarily bad, it might just not work well all the time or he might not have followed it himself.
It seems to be popular to slam people in NLP and similar for not practicing what they preach, and to an extent that may be a valid position. I don't see people saying that conventional medicine doesn't work because there are medical doctors who are obese, diabetic, alcoholic, smokers, etc. I worked with a doctor (not using NLP, it was at my job and I had to give him nutritional advice) who was obese and diabetic. I told him what he needed to eat and what foods to avoid but he insisted on eating food he knew would make his condition worse. I'm sure he's a good doctor for his patients, he just doesn't apply it to himself. That doesn't mean modern medicine is not valid, just that people are flawed.
