It is universally acknowledged that whatever you are doing,focus on being 100% present.Multitasking is impossible anyway

It is universally acknowledged that whatever you are doing,focus on being 100% present.Multitasking is impossible anyway.
It has never escaped my mind that when i was a middle school student ,a classmate of mine used to get good grades in our class,but he liked reading novels.every day after he finished his homework,he spend the rest of the day on read novels or watching TV.Our teacher persuaded him not to do that or he must fail in the next exam .But that student still ignored the teacher.As time went by ,he still studying while playing.Finally he didn't get good grades in the exam.
From that example ,we can learn that keep all of your heart on what you are doing,or you can't success .And please believe that where is the will ,where is the way.