Human beings are hardwired to seek familiarity and predictability, and going out of your comfort zone can create fear, anxiety and uncertainty. But taking the leap into the unknown is an essential part of personal growth. When her travel companion dropped out of a trip due to personal reasons at the last minute, then 21-year-old Krissten Tan faced the prospect of travelling to Ho Chi Minh City, Vietnam all by herself. The idea greatly intimidated her. Ms Tan had never travelled alone before,