"If you feel crappy, it's because your brain is telling you that there's a problem that's unaddressed or unresolved. In other words, negative emotions are a call to action.
When you feel them, it's because you're supposed to do something.
Many people are taught to repress their emotions for various personal, social or cultural reasons - particularly negative emotions.
Sadly, to deny one's negative emotions is to deny many of the feedback mechanisms that help a person to solve problems."
- Mark Manson: The Subtle Art of Not Giving a Fuck