Regret for the things we did can be tempered by time; it is regret for the things we did not do that is inconsolable.— Sydney J. Harris
为做过的事而后悔会因时间而慢慢平抚，为没做过的事而后悔却是无法平抚。– 哈利斯
正能量：positivity ／ optimism
充满正能量的、积极的、乐观向上的：positive／optimistic
stay positive: 保持正能量，保持积极向上
We all like to hang out with optimistic people.
我们都喜欢和正能量的人一起玩耍。
Appreciating what you have will help you stay positive.
感恩所有用的会帮助你保持积极乐观。
What’s with all the sudden optimism? What is happening?
怎么突然充满正能量了？什么情况？