Patience is a virtue, i mean there comes a moment in life wherein it seems everything is crumbling down and you can not do anything but be patient.
No one can lie and say patience is easy, it is not. Lets take for instance you loose something so precious to you, it is not easy to just accept it and move on.
That is why patience is rewarded because of it not being easy to practice. Psychological studies have proved that when one is going through a rough patch that requires patience, and he is patient. He in turn helps dissipate stress. giving himself the choice to act accordingly i.e, with a calm and centered approach.