Having been one who has gone through a bit of a mental illness phase (manic depression. fun while it lasted) not unlike what Bradley Cooper's character went through (less violence, more paranoia), I enjoyed the film as an accurate depiction of the day-by-day steps one goes through on that first recovery after the initial breakdown.

His idea of having this (unrealistic) goal of 'everything with my ex-wife will be fine if I can just do this' is a very real thing. The arguments with his seemingly overbearing parents who take every action of his to be a sign of regression were very familiar and Chris Tucker's character? I totally knew that guy.
What isn't real is the encounters with the unbelievably hot (yet equally troubled) girl who does everything she can to involve herself in his life. That just plain didn't happen.

Also, the relapse. You don't just get cured because you do a dance routine. That stuff takes years to fully cope with, with added time for each following occurrence, but whatever, it's a movie. The dance is healthy though, having routine in one's life, regular exercise and diet, familiar places and friends is very important for clearing one's head and getting your feet back on the ground. I didn't have a dance routine, I had lightsaber duels. 
I just wish my feet could've landed somewhere a little closer to Jennifer Lawrence's...
Anyway, the cast still gave great performances and I support Lawrence taking home the Oscar for it.