What determines a person's happiness?

Hi, I just wanted to let you know that I’ve posted my latest blog. It is called “Why would anyone in their right mind change from a walker to a wheelchair?”. It is about the path we travel during rehabilitation.
If you like it, please ‘like’ it, and pass it on.
http://theglassishalffull.weebly.com/why-would-anyone-in-their-right-mind-change-from-a-walker-to-a-wheelchair

Here is also a (very positive) book review from an American web site.
http://wp.me/p4NTVf-XZ
http://www.amazon.com/dp/B008A9S7R6