If you’re able to pick up a hobby to take your mind off studying and make it a routine/goal oriented. It really helps to give you a drive when you’re not completely motivated by the hsc and there’s other things to achieve. In yr 11 and still now I aim to knit a beanie every few months which I work on whenever I do pomodoro, I play piano/guitar to take my mind off things, my friends and I play soccer before the start of every term… and there’s so much more, you could set gym goals, go bushwalking if there’s tracks near you, get your Ls/Ps… life is so much more than just hsc so make some variety