The more you travel, the more you realize that this is not just about you. When you go out of your comfort zone and learn about yourself, your strengths, weaknesses, etc.
The trip also gives you the opportunity to meet people from different cultures and provide a new life perspective. You realize that you are just a speck of dust in this vast world and everyone around you has ambitions and dreams like yours.
The sooner you leave your comfort zone, the sooner you begin to realize yourself as well as everything around you.