It's really fun, though, and the reward comes when I stand in our computer room and see the first pictures come back from another planet, like I will be ble to do this coming July when we get our first pictures back from Jupiter. In summary, keep open to new ideas and look for things that you are interested in. If you find something, learn all that you can about it and try to do something that applies your knowledge. Take all of the science, math, foreign language, and history courses that you can, and find something to be excited about. The age at which people choose a career really depends on a lot of factors.
People often change careers because they discover a new passion in their life.
Life is too short to be stuck in a job or career that you don't like. The best thing to go for is a field of interest that you like, stay out of debt so that you can move around the job market easily, and always keep in touch with friends and acquaintances in different career fields. Today, this is the advice that professional job counselors give to middle-aged people whose jobs have been eliminated. Also, what people want to be when they grow up depends a lot on how old they are. For example, someone may want to be a doctor when they are in high school.