Persistence is king and, I know you are going to hear that a lot or don't give up, don't have fear. But the way I describe it is there are days when I am kind of afraid of heights and, there are days where I feel like my job is to go, walk on the edge of a seventy-story building and look down. I just swallow it and get on the train and start working. You really have to push yourself past your comfort zone. Don't pay attention to the negative. Focus on where you are getting traction and momentum. Believe in your passion and what you are working on. Focus on building a network with people who really buy into your dream as opposed to spending your nights staring at the ceiling thinking about why somebody told you that you suck.