Leo Babauta over at Zen Habits wrote a piece yesterday entitled 20 Things I Wish I Had Known When Starting Out in Life. This is a great read and contains such memorable gems as > Tequila is seriously evil. I won't go into details, but it should suffice to say that I had some bad experiences, and I'm not sure I learned very much from them or benefited in any way except to learn that tequila is the drink of the Devil.
Leo really knows how to get to the heart of the matter and explain the lessons he learned in clear concise language by sharing the mistakes he has made in his life. If nothing else, it will make you more self-aware and might even prevent you from making some of the same mistakes. Be sure to check out the post and weigh in in the comments.