Do we need to rehash this guy?
He has a book called "How to Be Happy All The Time".
It's not possible or feasible to expect to be happy all the time. Negative experiences and emotions are an inevitable part of life.
He has another book called "How to Be a Success".
You cannot become successful just by filling your head with "spiritual teachings".
Sure, maybe "positive thinking" can help, but maybe only 5%.
After that, what makes people successful is a combination of hard work, being in the right place at the right time, and innate talents and gifts that people are born with ... not "spiritual teachings".
A lot of people will never be truly "successful" as in millionaires or high-powered careers.
And you don't NEED to be. They're perpetuating false hope to many people and many people will become frustrated when they don't achieve a certain level of success.
But a lot of Westerners also wrote books like this, maybe copied the idea from this guy.
That said, he has put out a lot of other material, some of which may be valid. I don't have time to do a Phd on the guy's life work though.
Just looked him up on Amazon. He has another book called "Why God Permits Evil ..." ... who knows ... maybe it's worth a read . I dunno.