10. Happy people live in the present.
快乐的人总是活在当下

While unhappy people tend to dwell on the past and worry about the future, happy people live in the moment. They are grateful for “the now” and focus their efforts on living life to the fullest in the present. Their philosophy is:
不快乐人总是沉湎于过去担心着未来，而快乐的人往往活在当下。他们感激着“现在”，会努力让现在的生活达到完美。他们的人生哲言是：

There's a reason it's called “the present.” Because life is a gift.
有个理由叫做“现在”。人生本就是礼物。

So if you'd like to bring a little more happiness into your life, think about the 10 principles above and how you can use them to make yourself better.
如果你想要给自己的生活添加点快乐，想想上面的十条法则，看看如何让自己变得更好吧。