How can i know that it's really godo course for me when your in university? my course is biochem but dun know.

my course is bio chemistry and im already 3rd year university.
but still dun know if it's really good course for me or not. im very confused with them all. First time when i got here, i was in physics major student. then i just felf like i didn't really want to study physics but i want to study chem and i want to cure people who has aids. so i shifted to bio chemisty and now im thinking again what if i can't just acheve what i've thought but i won't be able to find any job and ill fail my life.. what can i do? is this ok just be with my course bio-chem?? i dun still know if there's job for bio-chem majoy student.. :(

Just relax. The main thing is that you study something that you like to do. In future, you can slowly move up towards your goals, like curing aids. You don't have to stick strictly with your course of study after you have finished your degree. Some people I know graduated with a BSc but went to work as sales in a fashion industry.

So you can just try to concentrate on your studies first. As for work, there's a broad range of industries you can work in, eg pharmaceuticals, research based industries etc etc.