My Sunday mass priest which I went to at St Cathedral on Sunday preached about “Giving your best and Expecting the worse” That way, you won’t feel disappointed in life. The fact that there are people who approach life this way shows that there is some evidence to it.
In life, we may see some people who give the least but expect the best. These are the types of people who often would be disappointed the most. Next, there are people who give their best while expecting the best result as well. This is not wrong in the first place but if things do not work out well in the end, there will be even greater disappointments in the end due to the time and effort they have put in.
By expecting the worst result, you essentially kills off any hope of disappointment. So any slight positive outcome from it will be treated as a good result.
For investor, I would assume it is hard to expect the worst result in the stock market. Mr. Market can take a swing from the very bad to the very good in a number of days. But I certainly hope that investors out there can take prudence in the recent market conditions and hope for the worst result you can endure.