Welcome to the phase of growing up mate. Not to worry though,
every soul goes through this phase. There are certain things you
need to ascertain
though:
1) Where does your strength lies eg creativity? Analytical mind?
Meticulous number crunching? - This would determine your
competitive advantage
2) Where does your interest lies -> You mentioned playing games,
well what kinda games?? Its important as this would help in
determining your
strengths (eg Warcraft?? -> you like strategic planning, Racing
games? -> You like challenges (sales)
What course did you undertake in poly btw?? There are many jobs out
in the market currently. However, whether you excel in those jobs
or not
largely depends on your passion as well as attitude when you embark
on your career. Meanwhile, I would say just relax and undergo your
NS
1st. During this period, you will be exposed to social
classification and the realism of life. You will mature and
eventually, you will find you answer in due course. 
Cheers
