What is the origin for the idiom sitting on top of the world?

The idiom "sitting on top of the world" originates from the idea of being in a position of great happiness or success, as if one is elevated above all troubles and challenges. It evokes imagery of a lofty and secure place, reflecting a sense of achievement and contentment. The phrase has been popularized in various cultural contexts, including music and literature, emphasizing its association with feeling elated and on top of one's game.