Arthur Boorman was a disabled veteran of the Gulf War for 15 years, and was told by his doctors that he would never be able to walk on his own, without hobbling on canes.

Overweight, desperate and in pain, he stumbled upon an article about a special yoga instructor, Diamond Dallas Page.

After getting a letter from Arthur, Dallas was so moved by his story, he began emailing and speaking on the phone with the veteran, encouraging him to keep going and to believe that anything was possible. Even though doctors told him walking would never happen, Arthur was persistent: he fell many times, but kept going.

In less than a year, Arthur completely transformed his life. Watch this time lapse video showing how, through sheer force of will, and with a helpful coach, he became an inspiring success story — viewed more than 11 million times on YouTube.