Hmmm, what stops me of being the people I admire. In my case I believe is 1. I am not good enough, no matter what; 2. Procrastination, I will do this tomorrow, when I will be on holiday, certainly not today :) and 3. Somewhere deep down in me I have a level of success that I cannot cross yet. Well good food for my thoughts for this evening. What does stops you?
What stops me? All the things you've just said. Fortunately, it's easier for me to say the following responses to you than to give them to myself :)