I understand where you're coming from, with what you're saying, but I must disagree.
Yes it's okay to be sad. It's okay to be depressed. It's okay. You are allowed to live through your emotions fully, whether they are dark or bright.
What is
not okay, is to bring everyone around you down. What is
not okay, is to not thrive to get better.
You control how you feel -- why would you want to live stoically and bleakly when you can be happy? Happiness is not something you pursue, but a state where you would not want things to change, because you are content. We had a thread the other week about happiness, and I think the person who embodied happiness is
@Poe Dameron and
he completely nailed it.
Being positive doesn't mean lying to yourself or others about how you feel. It's about taking a different look at life, and hope that the burden on your shoulders which blind you, is lifted momentarily, to help you fight.