This book looks at the parallel between running and persevering through life. Life is often unpredictable and there are constant moments of hardship and failures that often lead to something beautiful once it passes. Running involves pushing your body and mind to its limit. You motivate yourself to overcome the obstacles.
The book Grit by Angela Duckworth talks through different circumstances that make a person gritty. David Goggins challenges your mental toughness through his life story and his personal training to be a Navy Seal. This book makes tap into your inner strength and realize that you are far more capable than you thought you were.