The Three Tiers of Mastery Over the many years of engaging with people who have adopted the GTD methodology, I have noticed generally three stages of maturity they have demonstrated in using the model: 1 | Employing the fundamentals of managing workflow; 2 | Implementing a more elevated and integrated total life management system; and 3 | Leveraging skills to create clear space and get things done for an ever-expansive expression and manifestation.
