Under the Influence by Noelle Crooks

The Devil Wears Prada meets The Assistants in this compulsively readable debut following a young woman who takes a job working for an enigmatic influencer and quickly discovers there's an ugly side to being a #GirlBoss.
After a series of go-nowhere jobs in the New York publishing world, Harper Cruz is broke, lonely, and desperate for a salary that won't leave her scrambling to make rent each month. So when she stumbles across a job posting from an influencer offering triple her last paycheck, she automatically submits her résumé.

Harper may not be familiar with self-help guru Charlotte Green, but her relentless optimism and charismatic can-do spirit has created a cult-like following of women across the country. When she selects Harper among thousands of other applicants in less than twenty-four hours, it's obvious she sees something she likes. Despite the pressure to accept the offer just as quickly as she's been given it, Harper decides to take a leap of faith and become the newest member of The Greenhouse.

Accepting the job means a move to Nashville, and Harper is quickly dazzled by the glamourous world Charlotte has built in Music City. The Greenhouse is more than a workplace-it's a family-and Harper soon finds herself swept into its inner circle. At first, she loves working in such an inspirational environment, where mandatory dance parties, daily intentions, and group bonding activities make up for long hours and Charlotte's persistent demands for loyalty. But the deeper Harper is pulled into Charlotte's world, the more she realizes that having it all and being it all comes with a price.