I hate reading but loved this book. It's not even a "she's just like me" thing (she's hot, so she's obviously not), it's just that it's a series of extended, colourful monologues that are insanely funny and entertaining. I never give a fuck about plot and only like character development or when books use a character as an excuse to longpost about culture (e.g. in gone girl), and this definitely does the latter.
also, Eileen's protagonist is much more relatable to your average nona if you are looking for a self insert.