Endure: How to Work Hard, Outlast, and Keep Hammering

source https://www.amazon.com/Endure-Work-Hard-Outlast-Hammering/dp/1250279291/ref=zg_bs_books_23/137-8319380-9200141?_encoding=UTF8&psc=1&refRID=FM9NYWPT17G9T3MG8H40