…excerpt from Mo Lidsky’s latest book, Partners in Preservation In their book, Switch, Chip and Dan Heath tell the story that may have changed the future of British Petroleum, the oil and gas giant better known as BP, and offered a timeless lesson for investors. In the late 1980s, BP made a strategic decision to focus their efforts on big oil fields rather than compete for the smaller ones with countless smaller competitors. Management was also resolute about cutting costs. A