What is the literal meaning of i've been on cloud nine all day

The phrase “on cloud nine” is an idiom that means a person is feeling very happy or satisfied. Example: Will was in desperate need of a job. He applied at every possible place that he could in his town, but no matter what he did, it seemed like no one wanted to hire him.

The lesson of the story or the most important part of the story.

Explanation: i do not know what your question is so i answered base on a guess. but the answer is true