As stupid as it sounds, don't ever tell your friend that your bf just gave you a ring and you two are engaged (when you meant that as a joke).
You never know if she/he will tell a friend, and the friend will tell him/her friend(s).
All you know is once you get a little fatter, you'll hear a rumor about you being pregnant. (haha)
Stop your skinny daughter from consuming JAMU GEMUK no matter how she begged and cried and screamed at you. She will get really, really fat.
If you decide to hire a driver and you already have underage teenagers of your own, warn or THREAT your driver not to teach them how to drive. Your naughty teenagers will sneak out of the house after you're asleep and go clubbing.
If you accidentally found a damn gorgeous pair of shoes on sale but you can't find your size, don't buy them and think that you will only wear them occasionally. It won't happen.
Don't ever say never. For example : "I'll never get married before I'm 28".
You never know, trust me. :p
If the person you like, out of the blue asks you to hook him/her up with your bestfriend, don't pretend you're strong enough and say "yes". It's stupid. And you'll waste a lot of tears after that.
Don't tell your kids what to do with their life. In fact, don't even mention that you wish one of them to become something that you want. Doctors, architects, whatever.
You just don't want to waste your money to pay for expensive tuition that your kids never even attend because they don't like it.
Instead, help them to find things they're passionate about, let them build their own dreams and you'll be a happy parent.
Don't get too close to your bf/gf's parents. If you broke up, it can cause you so many problems and you don't need that.
Don't be happy on top of someone's misery. The guilt is something you can't bear.
If you think you deserve to be happy, at least wait until the time is 'right'. If you really deserve it, you'll get it.
Don't say i love you when you don't mean it. It's beyond cruel.
Don't break up with a person you love because you're upset, and THINK you will get back together. Guess what? You won't. You'll regret it for years and it sucks BIG time.
. . . and after all the lesson learnt,
i'll be a better person.