I personally think at the intermediate level, microeconomics can also help you in personal decisions, there are topics such as:
1. Game theory (how to deal with competition - consider your opponent's preferences before considering yours.)
2. Utility (happiness) maximization (instead of wealth maximization) -
3. Theory of Opportunity cost
A theoretical example (may be exaggerated) of opportunity cost can be...lets say investment banking. The 80-100k annual salary looks attractive to graduates indeed..but is working average 90hrs per wk under high stress lvl the best option you can choose?
so u hav option 1: get into IB and earn 80k, work on average 90hrs per wk under high stress lvl
or option 2: work at coles and work 90hrs (40hrs normal and 50hr overtime) under little amt of pressure. u'll earn $19 per hr, and overtime is 1.5 times normal pay, so ur weekly salary will be: 19*(40+50*1.5)=$2185
in a yr u'll earn 2185*52=$113,620, which is better than IB salary
so it seems option 2 - working at coles is better than working at IB
then why isn't anyone working 90hrs a wk at coles? well that's because the law does not allow normal staff working more than 40hrs. but no one seems to care about graduate bankers having to work from 8am to 1am...7 days a wk...
btw the above case is merely theoretical, it may not be an accurate reflection of the 2 industries (I was just trying to explain some theories, plz dont flame me
)