John Marshall

John Marshall is an executive coach who works with leaders navigating complexity and wants sustainable performance, not just output. He describes his approach as systems-informed, with engineering and commercial roots and a practice shaped by positive psychology and neuroscience.

He coaches like a systems thinker, for people who think in models, tradeoffs and constraints. His work moves through three stages: a System Audit of decision load, energy, conflict patterns and constraints; Logic Mapping to clarify tradeoffs and hidden costs; and Capacity Design, which puts in place practices that reduce reactivity and stabilize attention. The aim is clearer thinking, steadier presence and choices that fit the life a person is building.

Alongside one-to-one coaching, John works with organizations on leadership development and culture through Humessence Coaching and Training. He also mentors new coaches on positioning, building offers and creating a sustainable practice. He offers a Career Self-Discovery Program for people seeking meaningful work, rooted in the Life Purpose Institute's Self-Discovery Methodology, of which he is an instructor.

John hosts the podcast The Present Professional, which explores leadership, identity, resilience and performance at the intersection of systems and soul. He says he maintains advanced certifications and graduate-level training across coaching, positive psychology and integrative development.