I first want to say that whatever got you the year, keep doing that. And by no means is my opinion fact. That being said...
Fear - False evidence appearing real.
Fear is one of the big things I identified in my 4th step as my bar to growth and change. I was afraid, and am still afraid of so much that it disables me from doing anything that I am not already comfortable with. So I remain me, with all my insecurities, fears, comfort zones, and prejudices. By doing that which I do not want to do I learn that which I do not know. By having new experiences I am able to go to the next person, who is disabled by that same fear that I had, and relay my experience in the hope that it will somehow be helpful.
Hope this helps,