As a Capricorn born on January 18th, your personality is defined by your loyalty, intelligence and discipline. Your friends and family would be the first to praise your loyal nature, as you always seem to have their best interest at heart. While your loved ones appreciate your devotion to their needs, they may admire your personal discipline and intelligence the most. You have a quick mind and an attention to detail that is difficult to match. These abilities allow you to solve any problem that comes your way!