A bit more googling shows the book at $24.95.
Most public libraries will get the book in for you if you put in a request. It costs $13.20 at my local. They'll track it down from another library or buy a copy.
Just my two cents on happiness...
Happiness is a transitory state. People who are continually happy are insane, deluded or on drugs (or all of the above.)
What is necessary is to enjoy the happy times, feel good about the generally contented times, and tolerate the bad times with as much good humour as you can muster.
Buying a motorbike/van/boat/tattoo/thai contortionist expecting it to make you happy is doomed to failure. No matter what thing you have the continuing cycle of happy/contented/grumpy/angry will continue.
If you can develop the thought patterns and attitudes that let you be at peace with yourself then you can choose to do whatever you want and enjoy happiness doing it.
If you can't develop those thought patterns then you will be a miserable sh.t no matter what is happening in your life.
Peace out love children.