A longtime ago, I read some trading book, sorry cannot remember the title but it was about trading psychology. The two most important points were: 1. Anything

A longtime ago, I read some trading book, sorry cannot remember the title but it was about trading psychology. The two most important points were: 1. Anything could happen 2. We can only control risk While these points were related to trading, I slowly started to apply to pretty much everything. I used to think, like code, I can perfectly control outcome of any serious effort. Now I know in real life, you can do everything perfect but still get unexpected outcome. It sort of prepare me for unexpected and always think about backup plans.