The secret by Rhonda Byrne talks about the law of attraction & how to use it to live a full life. This is also what yoga talks about. Things like filling up your mind with so much positive thought that there is no place for negative thought is exactly what Yoga is about.

The base is the same - be aware of your thoughts, control or direct them to what you want. Its an inside job - apply the secret or yoga technique - its the same !