Antonyms for "going all out" include "taking it easy," "holding back," "moderating," "restraining," "limiting," "conserving," and "reducing effort." Each of these alternatives describe a less intense or less extreme effort or commitment. While "going all out" suggests a full and intense effort, its opposite suggests a calmer approach with less exertion or energy. Depending on the situation, an individual might find it advantageous to go all out or take a more measured approach. Ultimately, the choice depends on individual goals and circumstances, and either approach can lead to success or failure.