The Two Minute Mind is an excellent exercise for developing concentration.
Simply stare at the second hand on your wristwatch for that time.
At first your mind will wander but after 21 days of practice, your attention will
not waver during the routine.
One of the greatest qualities a person can develop to ensure his success is the ability to focus for extended periods of time.
Learn to built up your concentration muscles and no task will be too difficult for you.
Empty your cup.
A full cup cannot accept anything more.
Similarly, a person who believes that he cannot learn anything else will stagnate quickly and not move to higher levels.
A true sign of a secure, mature individual is someone who sees every opportunity as chance to learn.
Even the teachers have teachers.