"Everyone in this class will struggle, no matter who you are. Questions are going to be flying at you that you cannot answer, and when that happens, you're going to experience stress. And if you don't understand that stress, you'll think it means 'Oh no, I don't belong here.' But in fact, that stress is an indicator that your understanding is deepening. It's not a sign that you're not learning; it's a sign that you are learning."
Dr. Andrew Huberman