I am feeling the same way sometimes, but learned that you have the right to ask for the things that you didn`t know yet. This is for your own good so that someday, you will be the one who will answer the questions. Someday you will be able to help others to overcome the same fear you are fighting for now. Let your questions deliver you to a better YOU. :)
I blogged a first step on conquering one of my fear last time. You may check it on. Hope it may help.
Cheers! <3