Personal good qualities are always easy to tell but how about bad qualities? I had to say 3 and I had only one the day of my pilot interview. It is not easy to tell the employer you want to work for that you are a bastard! Bad luck for me that day, the psychologist asked me the same question in a different way: "If you sister was able to change one thing about your personality, what would it be?". I was not expecting that one… Well I took the time to think and I shared a small conflicting situation I had with her and how I reacted.