I don't know what to study in university?

don't go into psychology. its an interesting field but you cant do anything with it until you have a doctors in psychology. optometrist would be interesting, i dont know what courses you need to take for it though. i'm in my third year of electrical engineering and its incredibly time consuming with a very strong emphasis on math and science. Only about 20% of people continue in this degree after their first year because of the commitment it demands. however, i can't imagine any subject being more interesting.