The Bluebird of Happiness (or not)

I’m listening to one of the old Lawrence Welk shows on PBS right now (yeah, I know, but I like the music and remember watching these things years ago at home). One of the songs sung by Joe Feeney (who passed away a couple of years ago) just now mentioned the “bluebird of happiness”.
OK, what is that? Just what is the bluebird of happiness? Has anyone seen one? Does anyone have one? Where do you find such a critter? And what does he (she-it) do for you once you’ve found him (her-it)?
According to the fountain of all information (the Internet), you can purchase bluebirds of happiness made of glass, ceramic, or other materials. The web also talks of the mythology of the bluebird of happiness going back into ancient cultures. The bluebird, it seems, has long been a symbol of happiness, peace, and warmth. More than one song has been written about such a bird. And there are even videos on YouTube.
I’m reminded of the song by Little Jimmy Dickens that goes, “May the bird of paradise fly up your nose,” in the chorus. I have to wonder if the bluebird of happiness and the bird of paradise are one and the same. Maybe the two birds are related in some way. Maybe one is the evil twin of the other, since one bestows happiness and the other clogs up your nostrils.
Where indeed does happiness come from? How is it generated? Where is it stored? What brings it out into the open in a person’s life? What good is it? How can a person use it to his or her betterment? How is it measured? What does it look like?
You may think the answers to these questions are obvious “duh” answers, but think again. When was the last time you heard of someone who took his own life described as someone who was happy or was always smiling, or always a friend, etc? How often do we equate laughter with happiness? You and I both know those aren’t the same thing.
What about contentment? Does it have anything to do with happiness? And what about a person’s world-view? Does believing in God, for example, generally make one happier than one who does not hold such a belief? Can one be a God-believer (I’ll just say a Christian), and not be happy? Why or why not?
This happiness thing…it’s a real conundrum for me. Could it be that I’m not happy? Am I supposed to be happy? Do I deserve happiness? Why or why not?
Can someone explain this to me?