Dion Leonard doesn't love running. In fact, he often finds it boring and painful.
But despite his attitude about running, he's completed more than 20 ultra-marathons (any race longer than a standard
Last year, Leonard shot to internet fame through his unlikely friendship with a small dog he encountered while running the six-stage 155 mile Gobi Desert
Just as Leonard was due to return home to Scotland, Gobi ran away. Determined to bring his new friend home, he raised over £38,000 (roughly $48,362) to return to China, find his canine companion and return with her to Britain.
"Finding Gobi," released next week, tells the story of his emotional journey and triumph over a challenging youth that included a period of homelessness in his early teens.
Here are Leonard's three tips for developing mental toughness: