Lazyness is not a sickness. Lacking discipline can be enhance
through fasting and meditation. Have you ever fast something you
crave? Maybe you like to eat lunch, so fast your lunch ever day,
the hunger will remind your mind and discipline you.
Did you ever do NS? So you never march before? Marching can
enhance your discipline.
Or try Kung Fu or Karate. The martial arts require a lot of
discipline and mental strength, I guarantee you will get more
disciplined.
No pill will help you and don't waste your money on
Psychiatrist, they only listen to you and pop a pill into your
mouth hoping that the pill will change you. Only you can change
yourself, not the medicine.