Mark and his SAS troops emerged from that scorched battlefield twelve hours later, his mentor gunned down, his dream career now a nightmare. Over four deployments of intense warfighting, Mark watched the line between right and wrong become blurred. When he left the SAS he was adrift, crippled by guilt.

On a mission to rebuild himself, Mark turned his life around. He fought his way into the gates of a US Ivy League business school and into the boardrooms of top-tier international corporations. He spent years navigating failure in a quest to find new meaning in life. With every setback, Mark counterattacked, discovering the tactics and tools needed to become more resilient, and to find happiness, belonging and purpose.