All though it seems that by answering this, you are shooting yourself in the foot, you need to be very objective and honest about this. What is it that you dislike about yourself, it could be a character trait or a habit that you can’t quite shake off or maybe a physical feature that you are not comfortable with. Whatever the case this question will allow you both to have a good discussion about your insecurities and a way forward on how you can deal with them. Who knows, probably it isn’t as bad as you think it is and you may just be blowing things out of proportion.
