Since making her “Stranger Things” debut in 2017, Sadie Sink has delivered some of the series’s most impassioned performances, most recently stunning fans with her acting prowess in season four’s “Dear Billy” episode. A powerhouse in her field, Sink — who has been acting since 2011 — has performed with the likes of Helen Mirren on Broadway, Brie Larson on screen, and even Taylor Swift in her “All Too Well” music video. She’s also been nominated for an MTV Movie & TV Award for most frightened performance in her role as Ziggy Berman in “Fear Street: Part Two 1978.” Accolades and acting credits aside, the 20-year-old still faces everyday insecurities like self-doubt and impostor syndrome, something her “Stranger Things” character, Max Mayfield, has helped her slowly overcome.

“Growing up in this industry, you always kind of compare yourself to others,” Sink tells Glamour in a recent cover story. “That’s when you start doubting your abilities and those were my biggest insecurities, particularly in terms of coming into my own as an actor. As you get more experience, it becomes less about the competition and thinking ‘Oh my God, am I good enough?’ and more about finding yourself and drowning out the noise that comes with being in this industry.”

In addition to the pressures of being a young actor in the entertainment industry, Sink has also been forced to confront the unrealistic beauty standards placed on young women in the spotlight. “It’s impossible not to worry about those things,” she says of the unhealthy expectations. “There are a lot of issues that come with being a young woman in today’s society, but I like to focus on what’s real. My friends and the people in my circle, that’s what I pay attention to rather than likes on pictures or what other people are posting or wearing and what they think I should be wearing, be it clothes or makeup.”