picking SAC, stressing out too much in the beginning, procastinating too much, not mentally preparing myself for the crazy amount of work and expectations of year 11, thinking math would be easy like year 10 when it wasn't, kinda the same with bio and literally every other subject.
Edit: I just realised it was before going into year 11 whoops. well that's for going into year 11
Before going into year 11:
Actually putting effort into useless subjects. The only subjects I should have really tried in was math and eng and that was it. Also stressing out for exams and again putting that much work into year 10. I should have just enjoyed life and played games all day