on top of the world

Prepositional phrase

idiomatic

(idiomatic) Delighted; ecstatic; exceptionally pleased, happy, or satisfied.

Japanese Meaning

非常に幸せで、極度に満足している状態 / 上機嫌で、有頂天な気分 / 至福の、最高の幸福感を味わっている様子

After receiving the promotion, Jessica felt on top of the world.

昇進の知らせを受けて、ジェシカは天にも昇る気持ちだった。

Sense（1）

(idiomatic) Delighted; ecstatic; exceptionally pleased, happy, or satisfied.

He was on top of the world after she agreed to marry him.