This movie has a lot in common with its main character. Both are shambling and directionless, with a literary gloss and great deal of charm and intelligence. And both need all of that to be forgiven for their many failings. Tripp is in something of a stupor, not just from alcohol and drugs, but from success, and failure. He still has James' passion for writing, but he no longer has the innocence and sense of possibilities to "make the choices" necessary. When he says, "Sometimes people just need to be rescued," he is talking about himself as much as James.
This grand mess of a movie has many pleasures, including a terrific soundtrack, marvelous performances, and a beguiling but highly improbable ending. Tripp's colleague says that everyone has a story. What gets you from there to writing? He mentions faith, and Tripp mentions keeping at it. One reason is that stories like this one, highly imperfect but worthwhile, are what help us get to the ones that really make it all the way there.