This movie is above any reproach. Those who don't like it, don't like thinking about life or themselves. The only reason not to see it is because you would like to see a movie to escape and this is just the opposite. Still, it has a positive message, so it's a positive kind of drama, and dramatic it is, even slightly dark at time.
I could just list every aspect of the movie one by one and say it's excellent: acting, characters, camera shots, editing, soundtrack, story, dialogs... but I'm not going to waste more words on perfection.
Just see it.