This isn't the kind of thing I normally post here, but hear me out. Clinical depression is something that affects a lot of us. It's a treatable condition, but as with many afflictions, what stops so many people from seeking help is a failure to acknowledge that the problem exists. That's understandable. If you've been living with depression your whole life, you might not even be aware that it's possible to feel any other way. I assure you, it is.
I came across this video from the World Health Organization. Watch it. Share it with everyone you know whom you feel would benefit. If you need help, seek it. There's no reason to let this condition cheat you out of happiness.