How to study when you are depressed?

whenever I’m studying, there is this inner voice that keeps telling me that I’m not smart enough to do anything. And I become so hard on myself to do everything to the T, which is impossible coz I’m not a genius, or a robot. I’ve been depressed since last year now, already low on self worth, studying just makes me feel worse about myself. I have final exams from next week and I want to do well, but idk how to study confidently and block that inner voice. I could really use some help rn 🙏