Nothing is beautiful than to be happy, you just help me with the definition of happiness in your post, though I do know what it meant to be happy but now I can see its more than just a feeling.
It is a lifestyle, it is something we can have until we are satisfied.
But, can anyone be ever satisfied of been happy, That is not possible, unlike food, it would get to a stage that you will want no more. Though, their is peak happiness like you mentioned, that is what we should all desire to attain and maintain
This is just too full of wisdom, what a mystery unfolded.