How can a person improve concentration in studies??

nothing is important than our parents in this world ,just think of your parents difficulties, think of their difficulties,your concentration will never miss if you think your parents,,study well prove yourself and get a job,,after that you can enjoy whatever you want in your life,,,,if you concentrate now you will be happy forever and if leave your concentration apart from studiess then you cant live happy.... enjoy studying learninggg to live happy life... if you struggle now you will be happy in futureee... simple Mantra "Think of your Parents" . not necessary your parents are rich or poor they would have struggled lot to grow us...br /br /beautiful life will be waiting for you only after you get sucess,,, for this concentration in studies is must:)