Why is image important?
Some people say that appearance precedes ability, because when facing a stranger, external dress is our best business card, and it is your unique personal brand, the best tool to show a good first impression. If you are unwilling to spend one minute to showcase your external beauty in front of others, then others do not need to waste an hour to understand your inner beauty.
A good outward appearance can bring you confidence, thereby increasing others' trust and favorability towards you. Inner substance and abilities will make you more excellent and add points for yourself.
When you become confident in yourself, you will naturally increase your confidence in your ability to get things done. Confidence is not arrogance; it will add to your score, not subtract from it.