Her endless diary entries
You need a sentence with those specific words in it or using words that fit those characteristics?
The answer would be "She felt like a popsicle left in a freezer long enough to be shriveled" because it uses the word "like" which indicates that this sentence is a simile, and similies are a form of Figurative Language.
Only one?
If one then cheerful
If two then gloomy and cheerful