How do you study for final exams?

[FFR4EVA_00]

basically the most i've done is just read over my notes or the texbook over and over whenever i think of it until i've driven myself insane
for my general chem class i must've read all my notes over like a dozen times and i pulled a 98 on the final (to make up for a 64 on the last midterm)
this year i've got three math finals and a take-home art history final that i've already been working on for a couple of weeks; i'm only studying for one of them because i bombed the last midterm really hard
in humanities classes i have never fared well on final essays just because i'm bad at writing them, plus at least one class judged for length and nothing else