Once you make a career choice, you should set short, medium, and long-term goals.

This statement is actually true. Precisely because you have made a career choice, creating a thoughtful yet versatile career plan that sets or specifies your professional goals, as well as the means and the time-frame to achieve them, is very important if you want to remain focused, motivated, and eventually fulfilled. Usually, short-term goals refer to your immediate future (1 to 5 years ahead, approximately), and, therefore, they tend to be more specific and realizable, whereas medium-term and specially long-term goals, which could be accomplished five, ten, or more years from today (even a life-time), are more immaterial, or less tangible, but also more promising and fascinating. Life is unpredictable and not many things can be definitive, but setting goals and being committed to achieve them is a good way to shape a successful and satisfying professional career.    

this question is grammatically incorrect and is illegible to me so i can not answer.