‘The Secret’ by Rhonda Byrne is not the only nor the first book that offers good advice for a better life and a positive outlook. Happiness is a lot easier to achieve when you are getting into the right frame of mind:
The audiobook How to Stop Worrying and Start Living by Dale Carnegie deals with fundamental emotions and ideas. It is fascinating to listen to and easy to apply. Let it change and improve you. There’s no need to live with worry and anxiety that keep you from enjoying a full, active and happy life!
I find that by using a combination of these motivational books and applying their wisdom to my own life things have changed for the better.