As a senior in high school, the need to find a career for your future skyrockets. You will notice there are so many choices and end up choosing one you don't like. Don't worry. If you remember that you still have time to choose your future career you won't feel pressured and end up jumping into a job you don't like. If you are a teenager and still in high school or younger, you have time.
You may have had many ideas of what you wanted to be when you grow up when you were younger. Don't completely throw them out the window. Minus the crazy ideas, some of them could be something you would still want to do. If you wanted to be a doctor, check it out. If you wanted to be a marine biologist, check it out. Just because you were little doesn't mean it can't happen. If you are still interested, give it a chance. Don't let anyone else, including yourself, bash your dreams.
Look at what school subjects you excel at. If English is your strongest subject, you might want to check out careers in teaching, writing for magazines, writing novels or other creative writing, editing, journalism, or other careers that use English skills. For math or science, you might want to go into medicine, engineering, or business. If you like history, look into teaching, museum jobs, or anything related to your history era of choice. The subjects you are good at are often the subjects you enjoy. If you enjoy them and do well, you have available a great combination that can give you a great career.
Language skills can mean a career in translating or international business. Don't rule out any creative careers such as in any type of the arts, theater, fine arts, acting, singing, etc. They are hard industries, but if you feel you can do it, go for it. Still, be realistic. If you want to go into dance, you have to understand that a lot of people that do it have taken dance classes for years and lessons for most of their lives. Know what you are equipped for. If you think you can work hard, maybe you could make it. Just realize what you are setting yourself up for. If you are someone who starts things and quits or never finishes, try not to pick something so ambitious that you think there is a possibility it might not be for you.
When you've come up with a list of careers you are interested in, find out more about them. Find out the pay, hours, stress level, and any other important aspects of the job. If you know someone in that career, ask them if they like it and what kind of person would be good for the job. Learning from someone who does the job is the best kind of research. Now if you decide you've thought up your dream job, go for it! Also, remember that if you don't like it, it's never too late to change. You are going to be doing this for the rest of your life and you are going to want to like it.