礼貌，并不需要花钱。用完马桶后，把马桶盖放下；上电梯时，耐心等别人出来再进去；把购物车放回指定区域；在借东西时，归还时要东西的状态要比你借的时候还要好（例如给车加满油、把物品清理干净）。

Are you willing to push the right buttons even if it means being perceived as the villain? … I’d rather be perceived as a winner than a good teammate. I wish they both went hand in hand all the time but that’s just not reality. … I have nothing in common with lazy people who blame others for their lack of success.