Passion is either a curse or a boon. This depends. For example, if your friend calls you five minutes before the arranged meeting to tell you that he cannot come simply because he wants to watch his favorite TV show, then he is flaky rather than passionate about the show. It’s frustrating to deal with such folks since you can never rely on them or expect them to keep their promises. Do not let the urge to do something unplanned strike you when others expect it the least.