I'm glad you are sick of working. Working in part-time jobs or
full time jobs that doesn't pay well will only make one feel lousy.
I'm glad that you have considered studying to widen up your future
job opportunities.
For a start, maybe you can start asking yourself what do you really
want to pursue?
Before stepping into the "uni study-life", think of what profession
you want to set yourself into. Because the course you are about to
take, is not as easy as those in poly. So you have to consider
carefully and avoid taking courses you've no interest in or not
good at, and that will spell disaster.
From there, make a decision on which course you want to pursue. It
doesn't matter if it's a local uni or a private foreign uni. It
matters when you achieved what you really wanted.
Never mind, take your time to decide on what you want to contribute
to the society; on making a difference. Then from there, work out
your plan and objectives. Once you've set your goal, go for
it.
With Blessings. 
