Answer
The answer is "My Squirrel Days", as mentioned in the provided context. Ellie Kemper, known for her acting career, particularly in the comedy series “The Unbreakable Kimmy Schmidt”, has ventured into authorship with her debut book. Titled "My Squirrel Days", this book offers readers a humorous and personal account of her experiences and observations, inviting them to embark on a delightful journey through her unique perspective.