Usually many students face this dilemma of not knowing what career to take up.So its perfectly normal to come across this thought, just that you should be able to take timely measures in order to resolve this.
Inorder to recolve this you need to:
1)read up more on career information - so that you get to know them and accordingly check what suits you the best
Read up on careers on http://www.youngbuzz.com/careers/career-options
2) but this isnt going to be sufficient you need to know more about yourself in terms of your aptitude,interests and personality too. In order to know this sciecntifically you can give the online career test that YougBuzz offers. It will give you a very precise picture of what you are and thus help you narrow down your career options. Many students have taken it and found it immensely helpful too. Log on http://www.youngbuzz.com/career-assessment/role-assessment-career-counselling
You will also find a sample report which will give you a tentative idea of how your report will look like.