The phrase "made hit ceiling" implies reaching a point of extreme frustration or anger. To convey the opposite meaning, one could use antonyms such as "calm," "relaxed," "content," or "pleased." These words suggest a state of emotional well-being and satisfaction, rather than one of agitation or distress. Other antonyms for "made hit ceiling" might include "forgiving," "understanding," "tolerant," and "respectful," which denote a willingness to give others the benefit of the doubt and to approach conflicts with a spirit of compromise and cooperation. Ultimately, the choice of antonym will depend on the context and purpose of the communication, as well as the desired tone and impact on the reader or listener.