Well, the quoted thread above "Only invest an amount that you can afford to lose" is already an old but timely and constant reminder to every trader and investor, but I am also wondering how many people, how many investors, and traders are actually applying this rule because in my own experience sometimes I neglect this rule. But let's always practice proper analyzing on how we were going to allot our money before it will dissipate and not going to regret the thing that has been lost or happened.