Tyson Fury
Fury was the most talented heavyweight boxer on the planet and defeated the legendary Wladimir Klitschko. But he went into a downward spiral after a failed drug test. The British star ballooned up to a ludicrous 400 pounds as he spent his days drinking, using drugs, and eating kebabs.

But he managed to turn his life around after he faced his demons. Fury admitted that he considered suicide but the unlikely mental health advocate shed the weight and became a star again. He is a polarizing figure but this was one time when everybody applauded him. Now he’s emerged as the greatest heavyweight of his era and possibly ever (via Daily Star).