如果缺了这一课，可没办法去弥补。珍惜与孩子共处的每一刻，做父母是地球最最重要的工作。

28. Learn to be grateful
学会感激

This is easier said than done, but being appreciative of what you have can make the difference between a life of wanting and a life of contentment.
说起来容易做起来难，但是，不满现状还是知足常乐取决于你是否心存感激。

29. Start a business
做自己的生意

Don’t spend your life only knowing what it’s like to be an employee. Start your own venture, whether it be mowing lawns or running Internet security, try your hand in business. Lessons in entrepreneurship cannot be learned in a classroom. Real world experience will prove invaluable.
不要一辈子只知道为别人打工。尝试经营自己的生意，不论修剪草坪还是经营互联网安全相关业务。课堂上学不到生意经，真实世界体验的价值不可估量。

30. Be crazy
疯狂

Well, not literally. Do something wild and adventurous. As you grow older, you will begin a career, and/or settle down and start a family and will be less inclined to let it all hang out. Be bold and daring. And have fun with it!
当然不是字面上的疯狂，是做些既疯狂且有风险的事情。随着年龄的增长，你将开始自己的职业生涯，然后安定下来，组建家庭，之后你将变得小心谨慎。所以，趁现在去做些胆大妄为的事情吧，祝玩得开心。

While it’s never too late to work on your personal growth, getting these things done early in your life can truly make the difference between a life lived on your terms or a life lived on someone else’s.
尽管个人发展可以随时起步，但自我发展早或晚会使你的生活大不相同，你喜欢自己做主的生活，还是仰人鼻息的日子呢？