Just two months into the year, and 2023 has already brought its own flavor of rip-roaring rallies and steep sell-offs. 

The stock market can do just about anything in the short term. So following a business and its developments rather than the day-to-day price action of a stock is a far better use of time and energy. 

Published on Feb. 25, Warren Buffett's 2022 letter to Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) shareholders touched on the topic of inefficient markets and provided a refreshing reminder to focus on the big picture. To quote the shareholder letter:

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Source Fool.com