If you're ever left reeling and questioning your very presence in school, think long-term motivation. Where could your determined input in school take you? Could it kickstart your dream career or add to the possibility of that life you wish to lead? When I went to Melbourne, it kicked some perspective right in me and gave me an idea of what direction I want to go in. To even remotely make it in a vast city like Melbourne would be a dream, and I know that good grades would be handy.
Be tech-savvy. You should most definitely use technology to your advantage. It's a huge part of our lives, so why not let that tool serve you for school? (That rhymed.) For example, if I've one too many heavy textbooks to take home, I'll snap a quick photo of the questions from my math book and set an alarm to refer to it for completion. Personally, I also think video summaries are excellent with refreshing your memory. Being an audio and visual learner, I enjoy the medium of such videos. It's a great choice when you want a less stressful study technique; all you have to do is listen. I wholeheartedly recommend CrashCourse, School of Life and other educational Youtubers.
Another good way to study is through flashcards. I just started using the app Quizlet, and it's been immensely helpful thus far. Whether I'm on the way to school or simply waiting for something, I can pull out my phone and flick through my digital flashcards. Technology is also great for taking on quizzes - gradually, under a timeframe if you'd like! - and searching for your curriculum resources.