subjective
based on or influenced by personal feelings, tastes, or opinions.
Happiness is
based on or influenced by personal feelings, tastes, or opinions.
A simple example - Many people in India value education, yet they are not able to achieve it due to various reasons. Yet you'll see them happy. There are many personal examples, this is just an overview and I'm not going into detail. As mentioned in my article,
at the core of attaining happiness is the sense of contentment and the feeling of being at peace with oneself.
It's clear you aren't open to a real discussion about this, so this will be my last comment.
Happiness isn't about the immediate and instant achievement of every value one holds. Does the person in your example hold only one value? What has made that person happy if their value of education isn't being completely fulfilled? Any number of other values, or the partial achievement of them.
No doubt they can learn things on their own through experimentation. They might have watched someone else dancing and imitated the motions, now learning the dance. Or any of their numerous other values could be fulfilled, making them happy: things like a healthy family, a roof over their heads, food to eat, money to be earned, and so on.
I offered you an objective definition of happiness; you refused it. I'm not arguing that peoples values are subjective (most of them are). But I am arguing that happiness, as a state of being, has a very simple, objective definition.