For those of you who are in Year 12 and staring down the barrel of final exams, here is a useful fact sheet from Beyond Blue on Surviving Year 12. You can find the link here.
It's important to remember that there are thousands of other students across the country going through exactly the same thing as you. And, even if the worst case scenario happens and you fail or don't do as well as you hoped, you still have options. You can take some time off and apply as a mature age student or you can do a bridging course and get into uni. It's not the end of the world. So keep your chin up, don't panic and, as a famous fish once said, just keep swimming.