1The entrepreneur's optimism about the market trends inspired her team to work harder towards their goals.
2Despite the challenges, the charity's optimism regarding the fundraising campaign remained unwavering.
3Her optimism concerning the new policy was evident in her passionate speech at the conference.
4The company's optimism about the future was reflected in their decision to expand their operations globally.
5There is a growing body of research that suggests optimism can have a positive impact on both physical and mental health.