以下是一些快樂的英文短句：
1. Joy is the fruit of success.
2. Laughter is the best medicine.
3. Happiness is within your reach.
4. Smile and all your troubles will flee away.
5. Life is beautiful, embrace the joy.
6. Be happy, be kind, be yourself.
7. Smile and wave, life is beautiful.
8. May your day be filled with happiness and joy.
9. May the joy in your heart be as bright as the sunshine.
10. May happiness follow you wherever you go.
希望這些短句能夠帶給你一些快樂和正能量！