Mastery

Reviewed by Diario de un Inversor · UpdatedJune 13, 2026

Our review

Robert Greene built his reputation with «The 48 Laws of Power» and «The Art of Seduction», works known for their unsentimental analysis of power dynamics. In «Mastery», published in 2012, he applies the same methodology — the study of historical figures to extract universal principles — but with a more constructive purpose: identifying the path that leads to genuine mastery of a discipline. Greene examines the lives of Darwin, Da Vinci, Mozart, Einstein, Benjamin Franklin, and others to argue that mastery is not an innate gift but the result of a long and deliberate process he divides into three phases: apprenticeship, creative-active, and mastery itself. The application to the world of investment and business is direct: the book offers a framework for understanding why sustained superior results are the product of years of deliberate work, not intuition or luck. The weakness of the approach is a certain idealisation of the figures studied and the absence of cases of people who followed the same process without achieving mastery, which introduces an implicit survivorship bias.

Key takeaways

• Mastery in any discipline is the result of a long and deliberate process, not innate talent or shortcuts.
• The initial learning period — what Greene calls the «apprenticeship» — requires subordinating the ego and absorbing established knowledge before innovating.
• Deliberate practice, focused on weaknesses and guided by constant feedback, is the central mechanism of excellence development.
• Greene identifies a contemporary cultural bias toward speed and novelty as the main obstacle to achieving genuine mastery.

Fact

The book was published in 2012 and in it Greene cites the work of psychologist Anders Ericsson on the «10,000-hour rule» of deliberate practice as the empirical foundation of his theory.