Do you often find yourself saying yes when in fact you mean no? You don’t want to go out, but you still push yourself to go because you don’t want to disappoint your friend. Or, you don’t have time to take work from your colleague because you are already swamped and drained, and if you'd accept you'd need to postpone your after-work plans. You still accept it because you don't want to be a bad colleague. There are two basic reasons for saying yes. One is that you genuinely want...