Fear. The fear of not getting it right. The fear of people laughing at what we've created. The fear of what people will say. Fear in some shape or form is what keeps us from starting, doing, finishing. Know what? Do your dream because: (1) It is yours to do. No one else in the world can do your dream like you. (2) Some people will always have negative things to say. It's like it's in their DNA. Plus, they don't matter. (3) You will feel good, real good, after beating the fear and doing what you set out to do! I promise.
Fourteen to Fortyish: The Formative Years speaks volumes. I truly hope that you will give a listen.