Anyone else seen this Pixar movie? What did you think of it?

It's about emotional imbalance and sadness taking over while joy fights to restore balance. Others I've talked to just describe it as cute and clever. My little daughter likes to watch it, but I can't handle it because I just cry through the whole thing. I've actually never been able to watch it all the way through. It really made me realize how badly my emotional problems have traumatized me. It's the same feeling I get with my PTSD.