Gareth Holebrook has spent 30 years in environments where effort without judgement fails fast.He trained as a Weapons Engineer in the Royal Navy, then worked as an engineer and coach at companies including Sony, Navman and Visa.Endurance racing became the testing ground: dozens of ultra endurance races, and a collapse on the marathon at the World Championship in Kona Hawai'i.Gareth runs a smallholding in Northland, New Zealand with his wife Thiri. Sheep, horses and fences don't care about executive leadership, how the writing went or if the training plan is on course, and this is his priority.His work is the Ishi: 5 books on determined intent. The first, Ishi: The Discipline of Determined Intent, sets out a discipline of self-governance drawn from decision science, deliberate practice and the Japanese traditions of Kaizen, Gaman and Hansei. It is offered as it was built: tested under load, to keep, adapt or discard.He writes in greater depth on the ideas behind the books on Substack and early release of future books is on Leanpub.