I wanted to like this movie. I saw an interview with Zach Braff where he talked about how much of himself and his life he put into the movie, and it was savaged by the critics, not so much for content but because he used Kickstarter to raise some of the money for the film. Don't they realize that the only way you can tell the story YOU want to tell is by financing it yourself, and if you don't have all the money you need and your fans are willing to support you, I say more power to you.
That said, even though Zach Braff is a little too old to be considered a millennial, I am really sick of stories of the man-child who expects everyone else to cater to him so that he can follow his dream. If you're going to do that, DON'T get married and DON'T have children until you have followed your dream and either found success or accepted failure. In the movie, he is a failure as an actor, he is a failure as a homeschooling parent, and he is a failure as a brother. The only role he is even moderately successful in is as a son, and even then, his father thinks of him as a failure because he isn't providing for his family.
There are a lot of good performances in this movie. Kate Hudson's performance is deep and moving, as is Mandy Patinkin's. Zach Braff - well, no matter what film or TV show he's in, he's Zach Braff. I liked him in Scrubs. He was okay in Garden State. He was okay in this movie. I did not particularly admire his character, but I'm sure it was as true to life as he could make it. I have to admire him for showing what it's like to be an actor, although we all know that he was not the failure that the character in this movie was.
Three stars from me means "watchable movie, nothing special, wouldn't watch again."