There are several synonyms for the phrase "improve in outlook," which refer to a positive change in perspective or attitude. One alternative is "positive change in mindset," which conveys a shift in the way someone thinks or approaches a situation. Another synonym is "renewed optimism," which suggests a return to a more positive and hopeful outlook. "Brightened prospects" also describes a favorable change in expectations or predictions. Other synonyms include "uplifted perspective," "enhanced viewpoint," and "heightened positivity." No matter the synonym used, they all convey a positive change in the way someone views their future.