Then there's Warren Buffet's approach, which is to understand the "value" of the asset. He uses an example around a farm he purchased, one of his early investments. He likened the stock market to a (hypothetical) crazy neighbor to his farm, who every morning shouts a purchase price over the fence at him. One day, the price is half what it was the prior day! Buffet's lesson is that he learned to remain calm, because the underlying value of the investment didn't change.

Thus the challenge is separating market feedback reactions (aka fear and bidding robots) from real-world valuation adjustments (aka mere delayed demand vs. destruction of long-term value).