Erm... another point to brief point to add (coz I am already late for work)
I guess what I want to say is, don't live without a purpose, or goal.
With no purpose in life, with no long-term planning, it is hard to get somewhere.
Unless your goal is just primarily to come out, then do your job.
But it's always nice to have alternatives, so learn other stuff, like accounting and finances.
You never know, you may turn into a successful businessman in the future?
Don't limit yourselves to the sciences. Think far think big.
WE DO HAVE AN OPTION. Knowledge is everything.