The world is indeed changing fast with many new industries coming in and many dying out. By the time, you get to choose your line of work, you will have (new) array of industries. Currently, the no.1 advice : Follow your passion. You have time, try out everything. If you are interested in science work of different school projects, it will give you a hint of what you like and what you are good at. As Rita said (above), watch Ted.com. Look online for small projects in different fields, do voluntary services, read articles.. Once you find your passion, you will know your choices and will stick to it through life..