When I was 14, I hopped on a plane to British Columbia without knowing a soul. At first I was terrified at being at a new school, but gradually I grew to love it. That has been one of my greatest memories because I challenged myself to take a chance and go out of my comfort zone.
Leaving your comfort zone doesn't have to be done in an earth shaking way such as moving across the country. It can happen by trying something new or waving at a stranger on your way home. Life is made up of experiences and memories. So why not choose to make amazing ones and constantly challenge yourself to leave that little box of familiarity and experience something new.