diligence
n[U]
~ (in sth/in doing sth) steady effort; careful hard work 不懈的努力; 勤勉; 勤奋; 认真刻苦
She shows great diligence in her school work. 她做作业非常用功.
He pursues his aims with diligence. 他努力追求自己的奋斗目标.
It's quite simple. You put a very hot, wet cloth on your shoulder for one minute. Then put a packet of frozen peas on the shoulder for one minute. And so on and so on.