Being comfortable is nice, but if you want to live your life to your fullest potential. It is important to do things that may scare you, and take you out of your comfort zone. You will never improve, or have self-development sticking to your usual routine. Once you overcome your fear. You will feel good about yourself for being able to do something you didn’t think you can do. This can help improve your self-confidence, and it will allow you to try other things.
There have been things that scared me, and were outside my comfort zone, but if I didn’t overcome them. I wouldn’t have achieved the things I have, and would have settled in life. Life is too short to settle. You got to do things that will make you happy, which means doing things that are scary and uncomfortable. It is the only way to fully live and be happy.
Psychology of Mindfulness 