There are numerous synonyms for the phrase "feeling good" that one can use to describe a positive state of mind or a sense of well-being. Some commonly used synonyms include "happy," "content," "satisfied," "elated," "pleased," "blissful," "ecstatic," "joyful," "exhilarated," and "overjoyed." Other synonyms that can be used to describe a healthy and positive frame of mind include "confident," "optimistic," "energized," "refreshed," "rejuvenated," "peaceful," and "triumphant." Whatever synonym you choose to use, the important thing is to focus on the positive emotions that you're experiencing and to celebrate the good feelings that come from living a happy and fulfilling life.