What would you pick??

I have been wondering for a long time as to what is the force driving decisions that individuals make ?
Consider the situation where you're about to make the biggest choice of your life i.e choosing your career . Some of the most interesting factors that i have seen people considering while making the choice were

•  Spouse / girlfriend / boyfriend : ----You have just finished graduation.You are totally in love with a girl who says marry me now or forget it .But you internally know for a fact that you are screwed if you do that right now.
• horoscope -----if it says your gonna be a businessman and make a lot of money in being one.Will you have the guts to pick an exactly opposite option and try to make a career as an engineer for a company. In another case his horoscope clearly said he's going to go abroad for his education ( am assuming the horoscope meant higher edu) ,get a job there , get rich and marry a VIDESHI but to do that he had to turn down a job offer which he had from the company which he dreamt of working for.