How would I write an essay on Selfie by William Storr?

Unlike the title might suggest, the book Selfie, by William Storr, is not a how-to manual of how to set up and take the perfect selfie photograph. Instead, the book is an honest and philosophical examination of who we are and how we became that person. In addition to providing anecdotal evidence of his own, Willam Storr weaves in attitudes and beliefs about selfhood from people like Aristotle, John Calvin, Freud, Sartre, Ayn Rand, and Steve Jobs.
Regarding the question, it's a bit unclear as to what kind of essay needs to be written. The essay could be anything from a standard book summary and review to an argumentative thesis type paper. I suggest the second of those two options. The analysis of the book could then be a thematic analysis, or the paper could focus on further supporting Storr's statements about selfhood. Once a general topic has been figured out, a thesis statement needs to be crafted. The thesis statement will guide the entire essay. The statement should be relatively concise, and it must present your argument to your reader. I recommend a two-part statement because it will allow you to admit to the existence of counter-arguments. Your main goal is then to prove your own argument is better than those other arguments. For example: "Although Selfie appears to be a book dedicated to examining selfhood and helping readers find their true self, the book more effectively shows readers that a person is actually made of many different 'selves.' "
Once the initial thesis is taken care of, the bulk of the paper goes to supporting that thesis by using evidence from the text. For the above thesis, I recommend the following quote.

We have a self for work and a self for home, a self for lonely restaurants and a self for roadside diners; a self for Twitter and a self for Facebook, a self for the plumber and a self for the mayor. . . .

You could offer anecdotal support, but I would be careful. Find out if your audience (teacher or professor) is okay with that kind of supporting evidence.
Finally, the paper's opening hook is critical to your essay's success. This is the first sentence, and it needs to grab reader attention. Bored readers do not keep reading. You could do one of the following hooks.

Ask a question. This hook grabs readers because it forces readers to begin thinking about the question. They automatically read more because they want to know the answer.


Use a quote. The book is full of great quotes. I like the following: “You’re limited. Imperfect. And there’s nothing you can do about it.”


Use a definition. This could work well based on the book's title. You could define either "selfie" or "self."


Make a bold statement that attempts to get an emotional response out of your readers. Emotionally "fired up" readers keep reading.