以下是一些開心的名言英文：
1. "Happiness is not something ready made. It comes from your own actions." - Dr. Seuss
2. "Smile, it'll be easier to smile back." - Unknown
3. "Life is like a box of chocolates, you never know what you're gonna get." - Forrest Gump
4. "Laughter is the best medicine." - Old saying
5. "Happiness is not something ready made. It must be recreated every day." - Unknown
6. "A smile can change your life." - Unknown
7. "Life is like riding a bicycle, to keep your balance you must keep moving." - Albert Einstein
8. "Happiness is not something that comes from the outside, it is something that comes from within." - Maya Angelou
9. "Laughter is the shortest distance between two people." - Chinese proverb
請記住，無論何時都要保持樂觀和積極的態度，因為快樂是可以自己創造的！