Call it life experience or the school of hard knocks, by 50 we all have the hindsight to know which decisions were good ones and which decisions were, well, a result of youthful naïveté.
到了50岁，我们会后知后觉的意识到，过往的决定哪些是正确的，而哪些又不是。这可以称作人生经验或者生活磨练，又或许这就是年少无知的结果。
But whether you're a firm believer in "everything happens for a reason" or you wish the brains at Google would develop a time machine, you've probably learned a thing or two from your failures.
也许你是个坚信“事出必有因”的因果论者，也许你懊恼谷歌智囊为什么不发明个时光机器帮你重回青春……但不管怎样，你可能已经从失败中吸取到一些教训了。
We asked our Facebook fans what they wish they'd known at 25 that they know now. Here's what they said every 20-something ought to know about life.
我们在脸书上对《赫芬顿邮报》的粉丝进行了调查，询问哪些事是他们现在已经知道的，而希望25岁时就明白的。以下所列的是他们认为20多岁的人应该知道的事。
1. Speak up more.
有想法就尽情说出来
As the saying goes, it's the squeaky wheel that gets the grease. You are your one and only true advocate, so never be afraid to stand up for yourself and speak your mind, because regret's a b****.
常言道：“会叫的孩子有糖吃”。你是自己唯一并且真正的拥护者，所以不要害怕表达自己的想法，捍卫自己的权益，因为世上没有后悔药。
2. Know when to walk away.
适时走开
Many readers voiced that walking away, while it may be a difficult decision, is sometimes the best thing you can do for yourself. And the quicker you can come to this realization, the more you can save yourself from making up for lost time.
许多读者称，离开可能是一个艰难的决定，但有时这是你最好的选择。越早的认清现实，就有越多的时间来弥补过失。
3. Save more money.
多存钱
Retirement is no joke, as you'll learn by 50. As you stare at the bleak reality of your 401K, you might find yourself counting every nickel and dime you wasted on frivolous expenses. So pack your lunch, find street parking (or take the bus) and remember that a penny saved is a penny earned, as cheesy as it sounds.
到了50岁，你就会发现退休这件事真的不是玩笑。在了解了退休计划的惨痛事实后，你可能会意识到过去无意中浪费掉的每一分钱都是种奢侈。所以从现在开始自带午餐吧，将车停泊在街边停车位，或者改乘公交车。这虽然听起来很俗气，但记住：省钱就是赚钱。
4. Re-think a college major.
慎重考虑大学专业
A few readers mentioned how they wish they'd re-considered their choice of college major, or even thought twice before dropping out.
有几位读者提到，他们真希望能够重新选择大学专业，而且退学前一定要三思。
5. Travel more.
多旅游
You're only young once. So before you get tied down by responsibilities of a mortgage, a spouse and kids, it's a good idea to explore the world and all it has to offer (as long as it doesn't break the bank!). Consider working abroad. Visit the city you dream about all day. Just go somewhere that will make you look up and around rather than down at your smartphone.
青春只有一次。所以在你被按揭贷款、婚姻和孩子束缚之前，多去看看世界，不管花费多大代价那都是值得的。可以考虑去海外工作。去你梦寐以求的城市旅游。去个能让你抬头看风景而不是低头看手机的城市。
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