autocontrolarse

To control oneself — keep one's temper, impulses, or behavior in check: logró autocontrolarse pese a la provocación. A common, everyday verb, more emphatic than plain controlarse when the point is self-discipline under pressure.

• Logró autocontrolarse pese a la provocación del árbitro. — He managed to keep himself in check despite the referee's provocation.
• Los niños todavía están aprendiendo a autocontrolarse. — Children are still learning to control themselves.
• Necesita autocontrolarse más cuando discute con su hermano. — He needs to control himself more when he argues with his brother.

Treating autocontrolarse as different in meaning from controlarse — they're near-identical; autocontrolarse just leans slightly more formal/psychological, common in self-help and parenting writing.

Often confused with controlar.