Brie Larson, YouTube Personality. With an Oscar.

“It’s so exhausting to spend a lot time nit-picking inside your individual head each element of what you’re going to say,” she stated. “I wanted to know that it was OK for me to do one thing that was foolish or easy and it wouldn’t blow every part up, which sounds actually absurd nearly a 12 months later.”

She handled vlogging like learning for a brand new venture. “After I’m prepping for a task, it’s like getting a crush,” she stated. “You need to take into consideration them, you need to discuss them, and all over the place you go, it’s nearly such as you get magical indicators as a result of your entire world is that this love.”

A part of her analysis concerned video calling profitable YouTubers to study their secrets and techniques. In that first announcement video, there are moments the place Ms. Larson matches every vlogger’s emotional temperature.

“Individuals love residing vicariously by way of YouTubers, they find it irresistible, it’s bizarre,” Kelly Stamps, a vlogger, says within the video. “Like for those who simply undergo my feedback, persons are simply saying, ‘I really like simply seeing you be your self on digicam.’ Be relatable by simply being sincere.”

On a Zoom name in April, Ms. Larson tied up her damp hair and glued the collar of her tartan Batsheva smock costume. She had simply emerged from the sauna and ice bathtub, recovering from a coaching session for “Captain Marvel 2.” Generally, she vlogs her exercises along with her coach, Jason Walsh. “I simply wished to really feel like within the human realm I may accomplish what she was doing on this superhero realm,” she stated. “And it helped me inform the character. It didn’t make sense to only stand there and be like, ‘The C.G.I. will handle this.’”

Over time, Ms. Larson has discovered how “plastic” her thoughts and physique might be. “They will change for good and unhealthy relying on what it’s I’m doing,” she stated. She has struggled mentally by enjoying characters like Pleasure Newsome in “Room” and Grace Howard in “Quick Time period 12,” however with Captain Marvel and Equipment from “Unicorn Retailer,” her directorial debut, she felt herself embracing some character traits and taking them house along with her.