In The Just and the Unjust, by James Gould Cozzens, a character named Abner Coates watches a young attorney, George, nervously prepare for his first closing argument--
Abner knew how George felt because he remembered feeling the same way himself. There was no reason to feel that way, for speaking to people who were ready to listen was the easiest thing in the world -- you just went ahead and spoke.
Published in 1942, but still as relevant as ever . . .