While learning to drive, you focus on the task intensely, but soon the skill becomes second nature, so that you are free to focus on something else. I tell students to sing with confidence and courage. People don't believe that they can create emotional states, using the energy available within their emotional beings. I believe that the human race has arrived at an evolutionary stage where we are learning to use emotions as tools rather than to be ruled by them, in the same way that we have learned to focus the intellect on thinking. There are no guarantees in singing.
Nothing goes right all the time.
Inconsistency is the meat of life. Hope and courage are elements of success in any endeavor. The upper levels of technical skill require emotional involvement. We seem to be a society waiting for permission to be genuine, to express what is deepest within us without fearing rejection. We wait for the other guy to make himself vulnerable first.