Your best life is not in your comfort zone. The best place you can ever grow is where your fear is, that is outside your comfort zone.
Learn how to face your fears when you are outside your comfort zone, if not you won't see the growth and change you are looking for. The main battle is with fear, and if you don't face your fear and make a move you will be stagnant, and if you are stagnant in life you will die unnoticed.
Face your fear and move out of your comfort zone now.