It's definitely not as terrible of a year as you think. Enjoy every minute, because once you graduate, this stage of your life is officially over, and the new stage is a whole new world.
2. Try to Avoid Laziness
Senioritis is real. Once you get accepted into your school, you feel like the second semester has no purpose. I get it, but you gotta finish strong. Colleges check your second-semester grades too.
3. Create Memories
Sooner rather than later you'll be in a new place, forced to make new friends. Try not to let this year pass you by. Step out of your comfort zone, have some fun with the people you love before that time passes.
This might be the hardest one because by this time you've gotten used to not getting enough sleep, but now is the time to train your body correctly. Set a homework limit for yourself, and go to sleep at that time to ensure you're at least getting six hours. Work on napping too, it'll be useful soon.
5. Keep the Future in Mind
Often times, our knowledge of the future motivates us to get through our present situation or state. So think about the independence you'll have or the parties you'll attend to get you through your last semester of high school.
Remember that this time of year (second semester) is just as important as any other, especially since colleges and universities do a final grade check your last semester. Don't freak out, try to minimize your stress and simply enjoy your last few months. Congratulations, you've (almost) made it!