Tim Reid

Tim Reid

I’d suggest dropping everything to read and apply the learnings from David’s book.
Michael E. Gerber

Michael E. Gerber

This book is extraordinary. David is also a systems thinker, a creator of the first order, an entrepreneur who has done what I write about, not once, but several times. Read it. Relish it. But most important, DO it!
Kerry Boulton

Kerry Boulton

My unequivocal recommendation is that every entrepreneur and business owner must have this outstanding workbook and implement it!
Jack Daly

Jack Daly

SYSTEMology, provides every business owner the recipe to building their business playbook. What Michael Gerber started, David Jenyns completed.
Gino Wickman

Gino Wickman

SYSTEMology is a must for any business owner and their leadership team. It provides a powerful, practical, and simple way for systemising your business.