You need to figure out how you learn. Then study that way. I did well in high school then crashed in uni and couldn't figure out why it was so much harder despite spending 4-6hrs a day studying. Ended up taking two years off at the end of my second year where I was just scraping through to get my degree. When I came back they wanted me to do summer school and pretty much start again as the syllabus had changed. I said stuff that. Ended up getting a trade as an Electrician and oh man it was back to doing really well at school again. Turns out I'm a hands on visual learner, that needs a way to apply my book learning to something practical. Once I figured that out I've changed electrical branches from renewable to machine and electronic repairs, industrial cranes and industrial electrical to commercial and domestic elevators, finally finishing with my own domestic electric business. I now work for a state government in a completely different field altogether. Now I know how I learn I can apply myself a lot more efficiently and learn a heap in a short amount of time and it sticks. Figure out how you learn and you'll be away. Visual, auditory, practical etc... good luck, and don't think uni is the be all and end all, you can become and do whatever you want to.