What is the main idea?

Rating: 3/10 (18 October 2017)

Just finished the movie and somethings didn't exactly feel right. I mean first of all five emotions were acting like themselves except sadness. She wasn't sad she was clearly depressed. When you are sad you want to cry out your lungs yet she was hopeless and tired all the time. And the main message of the movie didn't make sense to me at all. The depression which Riley's been suffering was not something crying and experiencing the sadness would've fixed which she wasn't even denying being sad from the beginning just at some point sadness decided to go. And when it was back it stopped Riley from running away from home?How? Why?Was she sad she was going to be alone? I mean her feeling sad just should've made it harder and longer her acceptance of her new conditions for all I see with its presence.Or maybe sadness cornered her saying if you want to avoid pain avoid me just accept all of this I don't know maybe this was the message intended.