They say my days are numbered, but who wants to live long anyway?

Every time I get online to write on my blog I feel inferior because in a sense I am publishing content to be viewed by others and I Don't consider myself a professional writer.  Having a blog  or releasing any content to the possible masses should and does require more from the writer to express themselves or their perspective.  I know my English professor would be lecturing me on my shortcomings as a writer,  That is why I am fearful of posting sometimes  Someone is going to find out my other persona and ridicule me publicly.