"The worst enemy to creativity is self-doubt."--Sylvia Plath

Boy, that's for sure!  Finding your way around your inner critic can be an arduous journey all by itself. Combine that with being concerned about what "they" might say, and you've got a one-two punch that can K.O. any creative notion.
How do you get beyond self-doubt and go for your dream?
As yourself these question:

1. Who are you? 
2. Who do you want to be? 
3. Are the two different?  
4. If so, then identify what  the differences are between the two?  
5. How can you narrow the gap between who you are and who you want to be?

I bet your answers to questions 4 and 5 have something to do with courage.

It takes courage to overcome self doubt and fear of criticism, but that's what it takes to be a hero.  If you want to be a hero in your own life, have the courage to live the life your soul wants you to live.