Perhaps it's our sense of survival that pushes us or just the need for change. Whatever it is, these times in our life may be hard emotionally and in the case of fitness, physically, but greatness usually follows. I have never regretted stepping out of my comfort zone! My most memorable and proud moments have come from these times.
I challenge you to step out of your comfort zone. Try something new, make a new friend, talk to that person you've been avoiding, or simply put yourself first today. It's not selfish to want to be the best you. The other aspects of your life will thank you for it. What are you waiting for? Take the leap today!!