
Stephen Hero is a posthumously published autobiographical novel by Irish author James Joyce. It is the early version of A Portrait of the Artist as a Young Man. Its published form reflects only a portion of the manuscript: the first 518 pages have disappeared; 383 pages remain.
The tragedy of Portrait is that so many people read it as if it were simple autobiography. It isn't. Stephen is based on the young Joyce, yes, and in the original draft and notes (mostly destroyed, published as Stephen Hero) there's a saccharine sincerity that fits your sense of the book a little better.
But that's not the finished Portrait. In Portrait Joyce makes fun of himself. He's critical of his youthful exuberance. It's a hilarious book for anyone who's ever taken themselves too seriously, which, I think, is all of us.