This movie was amazing. Like Flash said, it is indeed a Rocky movie. Will plays the part amazingly well, as does his son (amazing for his first acting time!)
This movie actually suprised me because although it has the word "Happyness" in the title, it really isn't that happy. It is actually very sad most of the time. You will feel bad for the main actors. But fortunately, Will keeps hope, which gives the viewer hope. It's a tad long and monotonous, but still worth it. Definately the most inspiring true story I've ever seen. Bravo.
9/10