i always feel like this even after studying 6 hours+ for days but sometimes what works is humbling myself by saying "i have no power as a high school student, its all doomed anyways we will probably all die from global warming like in 10 years" and like in 10 years from now i would have probably...
I definitely recommend going to the library, it really helps you focus! If you're talking about State Library in Sydney its pretty nice but it can get super crowded during exam periods... Right now going to UTS library is good because its super pretty and its open to the public during weekdays...