On Comfort Zones and BASE Jumping
Jesse Itzler, the owner of the Atlanta Hawks, hired a former Navy SEAL to live with him for a month and to help him push himself beyond his comfort zone. His key takeaway was that when your brain taps you on the shoulder and says "you're done," you're really only 40% done.
There is no growth in comfort. If you live in a comfort zone for too long, that becomes your norm. It never allows you to gain experience, knowledge, and mental toughness.
You can't improve when you're on autopilot. You must set goals and challenges. You must push yourself way further than you think you can. We all have a reserve tank that allows us to do so much more than what we think we can. Everyone has a journey and each one is different. However, most don't take their journey. Most try for an easier path. You've got to accept your journey.
If you get into BASE jumping, it's common to hear that there are three things guaranteed: (1) You are going to break bones, (2) you are going to watch people die, most likely they will be your friends, and (3) if you do BASE jumping long enough, you will die too.
Having been outside of my comfort zone for some years now and seen others alongside me, I can tell you one thing for sure: You don't need to go out all the way to the danger zone; as long as you're uncomfortable, it means you're growing.