I don’t see any examples, however, if you look at your examples gloomy is similar to sad or dreary, and the opposite of cheery or happy, so look for that in your examples
A memoir is much like a self reflection that tells anecdotes from the author's past. Neil Armstrong who was the first man to land on the moon, would most likely have a memoir focused on his training and his experience flying in outer space and walking upon the moon's surface.
