What is happiness?

What is happiness? Is happiness a thing? Is happiness a state? Is happiness a destination? Is happiness a person? Or is happiness a place?.
We have always believed that its the things we acquire,  our accomplishments or the money we make are what are going to bring happiness,  but the problem with this theory is that, we can see people that have the money, accomplished a great deal and acquired a lot of things, but are still as miserable as the rest of us or even more miserable.                                
 We believe that happiness is found in our family and friends or in some cases the one true love( the i'm happy when i'm with you people) but the problem with this theory is that people are not trust worthy, they disappoint( they break hearts into pieces). Infact nobody wants to begiven that kind of responsibility, to have someone else's happiness tied to them when they haven't even found theirs.
Somepeople even believe that happiness cant be found on earth, that happiness can only be found in some kind of after life. But the problem with this theory is that "what's the point of living?" If we can't be happy why dont we just stab ourselves and go to the after life and be happy.
I don't thing this theories are wrong infact i think it can add to you having a wonderful life but the thing is, i think we have to own our happiness not place it on an  achievement, a thing, a person or a place. I think happiness is a choice, you can decide to be happy or not. There is nothing like happy ever after(that's the biggest misconception on this earth) because we all know that challengesare going to arise, so instead of enjoying our moments we look at our challenges waiting for the perfect happiness. I think happiness is a moment,  that moment were you are happy with yourself and all the troubles of the world doesn't matter and i suggest you enjoy them while they last.