Bava Metzia 52a-b Master Your Grievances - אין לו עליו אלא תרעומת

Matmonim: Daf Yomi by Rabbi David Lapin - A podcast by Rabbi David Lapin

The Torah expects high levels of personal mastery from us. Even to having a grievance against one who wronged us needs us to have an Halachik basis that permits such a grievance.Source Sheet