经常给别人提供一些额外服务，会给你带来意想不到的好处甚至财源滚滚。大卫·史华兹博土曾讲过这样一个故事：一次他开车到一家外表很普通，生意却很兴隆的加油站加油，服务人员帮助他加满油以后，又检查引擎里面的零件，把挡风玻璃擦干净，然后走过来说：“先生，抱歉，这种 Often providing some extra services to others will give you unexpected benefits and even financial resources. David Schwartz has told a story like this: once he drove to a gas station with a very ordinary appearance and a very prosperous business, and after the attendant helped him to fill up with oil, he checked the parts in the engine Windshield wiped clean and then walked in: "Sir, sorry, this