Swami Vivekananda (Hindu, spiritual Guru) said,” Strength is life and weakness is death.”
I mean your core competency. The way you can do no body can do in this world. In current world NADAL is a best example of the tennis game.
For instance, Julia Robert, Michel Jordan, Sachin Tendulkar, Gulam Ali, Amitabh Bachchan, Lata Mangeshkar, Pundit R. Ravi Shankar and Picasso are the examples of using competency at optimum level.
All legendary performers have invested decades and use their talent at the maximum level.
Knowing your own self and focusing on it for daily 8 hours is a way to live qualitative life. Following mathematics of time 24*7*365 for next couple of years will definitely lead you to the place where you have never reached before in the life.
Weakness can be strength if you set a goal and start investing efforts after that goal. For instance, I do not know swimming and I feel shame for it .once, 5 year old child laugh on me very badly for not knowing swimming. I immediately decide to learn swimming. I hire a coach and join swimming pool for couple of weeks. I successfully learnt swimming. Swimming was my weakness and after few weeks it becomes my strength. Goal setting technique can help in transforming weakness in to strength.
Using competency at optimum level and minimizing weakness for life time is an ideal way to lead life.