I think he's got a positive attitude, that he is supportive and motivational to many people.
Much of what he shares is common sense, is based on many popular beliefs about the power of ones' mind and listening to intuition. These are all good things.
That being said, I really don't like the format of the show, it has an infomercial feel to it. I also don't like that he isn't stressing anything about nutrition or health at all.
"Eat what you want" is one of his main ideas, and I think that may not be the best way everyone can get their nutritional needs met.