Self-restraint

He refused to exercise self-restraint.

But, coming to the throne, she threw away her modesty and brawled and rioted with very little self-restraint.

Adversity and prosperity reveal one's breadth of mind; joy and anger test one's self-restraint.

His lack of self-restraint led to several ugly scenes of debauchery and violent outburst.

Sovereigntism means a country doing what it wants to do within only the limits of what it can do. It means the end of self-restraint within a framework of mutual restraint.