Over-indulging means to excessively indulge in something, usually food, drink or other vices. Antonyms for this term would be self-control, restraint, moderation, or temperance. Self-control refers to the ability to control one's emotions, desires and impulses, while restraint means not giving in to temptation or excess. Moderation is the act of avoiding extremes in diet, behavior or other aspects of life. Lastly, temperance is the act of practicing self-discipline and restraint. Adopting these antonyms can help individuals maintain a healthy and balanced lifestyle by avoiding excessive indulgence in harmful or unhealthy habits.