comprehensive knowledge or skill in a particular subject or activity.
"he played with some mastery"
synonyms: proficiency, ability, capability
With the goal of never-ending continuous growth in the three major areas, you can begin to attain mastery of your life. The quality of your life is directly proportionate to the quality of your relationships - particularly your intimate ones. Your relationship to your Self is equally important. Lastly, know that the mind lives in the body. You can't just think yourself into being a stronger man, you have to move like one and BE one.