How to choose a Career

I am 17 completed my schooling , I do not know what to do , what I want to be , I just know the following

- Moderately Stable

-Enough Money to live without worries , or paycheck-to-paycheck

-Atleast Somewhat in the category of Upper middle class

My current interest range from Biology to Computer (I have done my schooling in the subject physics, chemistery , maths , biology )