You sound like an intelligent "scanner". Have you taken the self inventories to help you nail down the areas you like the best? Are you working with the uni counselor to explore career opportunities? There are plenty of resources available to do all this, including the projection of what type of career people the world will need by the time you graduate.

I wouldn't go too specific if I were you...and don't be afraid to change majors later. (I did so between master and doctorate!)

I'm supposing that you bore easily and need change. That should be first consideration--not something that locks you into one task area. And you need to decide if you wish to work alone or with others most of the time. Are you a self starter or do you need others to motivate you? These types of considerations will help you narrow your good choices.