以下是一些英文佳句，它們可以激勵人們微笑並面對生活的挑戰：
1. "Life is like a box of chocolates, you never know what you're gonna get." - Forrest Gump
2. "Smile, it works wonders." - Unknown
3. "The best way to predict the future is to create it." - Abraham Lincoln
4. "Life is too short to be serious all the time." - Unknown
5. "Laughter is the best medicine." - Unknown
6. "You can't make a sunset without sunshine." - Unknown
7. "Happiness is not something ready made. It comes from your own actions." - Dalai Lama
8. "The smile on your face is the sunshine in my day." - Unknown
9. "Smile and the world smiles with you, frown and you'll be alone." - Unknown
10. "Life is 10% what happens to us and 90% how we react to it." - Charles R. Swindoll
希望這些句子能夠鼓勵你微笑面對生活中的挑戰，保持積極樂觀的態度。