I came across an article today about wannabe writers in India. I especially liked one young woman's "confession":
"You need guts to write. I am planning to get my book published soon, but as a young writer I have apprehensions at times whether my writing is good enough to be published,"
I remember that feeling. The simple, and scary, way of finding out is to do the best you can, finish it, and submit it for publication.
You can read the whole article here.
Just keep writing.