"Lost control oneself" can refer to a range of behaviors from minor slip-ups to serious outbursts. Some synonyms for this term include losing one's temper, losing one's composure, going berserk, or having a meltdown. Other phrases that capture this experience might include flipping out, breaking down, going off the rails, or falling apart. Regardless of the specific word or phrase used, the experience of losing control can be overwhelming and even damaging to one's relationships, work, or mental health. It is important to seek support and learn strategies to manage strong emotions and reactions in healthy ways.