出典： https://www.askideas.com/when-i-was-5-years-old-my-mother-always-told-me-that-happiness-was-the-key-to-life-when-i-went-to-school-they-asked-me-what-i-wanted-to-be-when-i-grew-up-i-wrote-down-happy-they/ When I was 5 years old, my mother always told me that happiness was the key to life. When I went to school, they asked me what I wanted to be when I grew up. I wrote down ‘happy’. They told me