Just do it. You're over thinking which is killing you. Just start and build as you go. When I started I had NO clue how to do anything but fix computers. I didn't know how to network or gain more customers. I just went out there and network my tail off and learned as I went. Talking to random people at an event was not in my comfort zone. Now, I kill it every time I go.

Bottom line, just start. Fear is fake. If it's not going to kill you then it's all made up in your head.