get over my fear of singing in front of people

I seem to have this deep in grained “Fear” of Singing Solo in front of people. I think it’s ONLY because, I haven’t sung in front of people often throughout my lifetime. And even though I have sung in a “Choir” before for fourteen years out of my life. I DO NOT think that singing in a choir would qualify me to be able to sing solo in front of a crowd of people. NOT EVEN three JUDGES on “American Idol.” Plus, to add to that I have a very low self-esteem and no confidence what so ever in myself. Also, the strangest thing is that I know that GOD (just to say this as a Christian) wants me to become a songwriter/singer in the future. Though I DO NOT believe that this spiritual gift would ever guarantee that I would survive on A.I. Also, I still do not understand “How” in the HELL am I ever going to become a singer/songwriter if I have this HUGE FEAR of “Singing Solo” in front of people? “I JUST DON’T UNDERSTAND!”