kolkey·14 tahun yang lalu·discussThis is a very clever piece of blatant advertising. I think I'll buy some.
kolkey·14 tahun yang lalu·discussLike all good advice this one is repeated again and again.I think I heard it for the first time 10 years ago from Brian Tracy : http://amzn.to/zv02VRAlthough I am sure that others mentioned it before him.* Gratuitous affiliate link included.