Terrible to be overambitious. It reveals so much about the things they consider to be important in life. If it’s only work, work and work. You are getting a red flag. Oh god, isn’t that attractive. An absolute trait you should be on the lookout for. Generally people in a tough spot in their life would have difficulty with it. And to people who are trying to build a personality, keep this on top of your checklist. I am not saying inability to speak is a sin. Just observe how they conduct themselves around in a group of 5–10 people. Are they vocal? Are they opinionated? Biased? That speaks volumes about someone’s personality.