Putting on a brave face to get through your day may make it easy for other people, but not for you. If you are feeling bad, go with it. Have you ever thought "I tell myself I shouldn't be feeling the way that I'm feeling?" You are actually making things worse!
Researchers from the University of California wanted to see how resisting negative emotions affected 13-hundred people. The results were interesting. You end up being more stressed when you fight that blue mood. If you embrace it, that level of well-being goes up.
In a nutshell, don’t stifle how you feel. No matter what that mood is, embrace it and remember “this too shall pass!”