Never lose money

We dislike being wrong and pride is one of the wrong reason for holding on to a losing trade. This is different perspective if you are a long-term investor.

Lose	Returns needed to  break even (%)
-5%	5.26
-10%	11.11
-15%	17.65
-20%	25
-30%	42.86
-40%	67
-50%	100
-60%	150
-70%	233
-80%	400

Investors who have a loss-adverse nature needs to execute a stop-loss rule early. A losing trade makes the fear of loss become unbearable, or an investor is forced to close a position which is leveraged. From a mathematical perspective, the bigger the loss, the higher returns needed to break even.