
"Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. It is our light , not our darkness, that most frightens us. We ask ourselves, who am I to be brilliant, gorgeous, talented and fabulous?
Actually, who are you not to be?
You are a child of God. Your playing small doesn't serve the world. There's nothing enlightened about shrinking so that other people won't feel insecure around you.
We were born to make and manifest the glory of God that is within us. It's not just in some of us; it's in everyone. And as we let our own light shine, we unconsciously give other people permission to do the same. As we are liberated from our own fear, our presence automatically liberates others."
avenscent

I think we are afraid of our own powers at times, i have been accused of holding back and i think its a kind of fear of giving my all.
When i sang with bands in my youth i was told to stop holding back,not sure what it was i was afraid of though. What you say is interesting.