The phrase "all torn up" expresses a feeling of disarray and emotional distress. Antonyms for this phrase include "calm," "composed," "serene," "peaceful," "collected," and "tranquil." These words suggest a sense of inner peace and a lack of turmoil. When one is "calm," they are often able to approach situations with a level head and make rational decisions. A person who is "serene" is free from agitation or disturbance. Being "collected" involves being in control of emotions and focused on the task at hand. Words like these provide a sense of balance and stability, which is the opposite effect of feeling "all torn up.