There are various synonyms for the phrase "be once again optimistic". Some of these words include hopeful, positive, confident, bright, and upbeat. To "be once again optimistic" means to have a renewed sense of hope and positivity after experiencing a setback or disappointment. It involves acknowledging the challenges faced and choosing to focus on the possible positive outcomes instead of dwelling on the negative ones. Being optimistic allows one to see opportunities where others see roadblocks and to approach situations with a can-do attitude. It is an essential trait to cultivate for individuals who wish to be successful in achieving their goals and living a fulfilling life.