There are many synonyms for the phrase "working oneself up". Some of these include getting agitated, becoming overly emotional, getting worked up, losing one's cool, becoming anxious, getting stressed, becoming worked up, getting wound up, and becoming upset. Other related phrases include getting riled up, getting heated, becoming irritated, getting flustered, becoming perturbed, and becoming frazzled. All of these phrases suggest a level of heightened emotion or energy, indicating that the person is feeling strongly about whatever situation is at hand. It is important to recognize these feelings and find healthy ways to manage them, such as through deep breathing exercises or calming activities.