To do the Right Things......

I read this quote when i was walking past the shop this afternoon"It takes less time to do things right then explain why you did it wrong".
It's quite true,especially if you had a boss that has a motto;Excuses are like armpit.Everybody has one and it stink......hahaha.Funny when it aim to someone else,stink like hell when he said that to me.....
But I'm human after all,and to err is human isn't it..?As long as you have learnt from your mistake and moving forward,surely that should be good enough?What have happen to positive thinking,to praise and catch people be it your coworker,your employer,your children,family do the right things instead focusing on catching them do the wrong things,you'll be less frustrated or angry..
I want positive thinking to be applied when we stuffed things up.....cause i know most people don't have a memory of a goldfish.....