1. encouragement: when others are facing difficulties or setbacks, you can use this sentence to encourage them and tell them to be optimistic and positive, and believe that everything will be fine.
Nostalgia: Recalling the good old days, you can use this expression to describe the warmth and beauty at that time and express your nostalgia for the past.
3. Expectation for the future: I am full of hope for the future. When I look forward to a better life, I can express my expectation and confidence. I believe the future will be full of sunshine and warmth.