Mastery

Taken from Hedge Fund Masters by Ari Kiev:

” What is mastery? Webster defines mastery as the possession of a skill or technique that implies freedom from flaws or imperfections; or skill or knowledge in a subject that makes one a master in that subject. Mastery is having supreme proficiency in a particular activity… to describe that degree of competence at which the individual is willing and able to take responsibility for the outcome of his or her efforts, even in environments where the individual does not control all of the forces, such as the markets.”