Just like in the case of two people who are wrestling... if one of them moves with sloth and lethargy, he will be easily defeated and felled, even if he is stronger than his fellow; so, too, in battling one's evil inclination, one can prevail over it ... only with alacrity that comes from joy and from a heart that is free and cleansed from every trace of worry and sadness...
Rabbi Schneur Zalman of Liadi
