To answer your last question first; was I able to use my new skills? That is both yes and no. I took most of my college courses while in the military as it was the most cost efficient way of doing so. At the time I thought when my contract with the Air Force was up I would become a fire fighter so most of my college courses were geared to fire fighting. I did become a fire fighter just not a career fire fighter. I volunteered with my local volunteer fire company.
I found that I had a gift for sales and sales marketing something I have made an excellent living at and enjoy. While I do enjoy fire fighting I did not enjoy doing so on a career basis.
TO answer the rest of your questions I will do so in this manner. When we are young just finishing High School many of us are not truly prepared or really know just what we want for our life's career. We have ideas or maybe infatuations with certain careers while others know exactly what they want or at least think they do. Still others do as their parents advise or tell them to.
What is common about any of this is the fact of a college education in a particular course of study. When you learn anything it changes you. You grow and mature in many different ways.
I know a doctor whose parents wanted him to be an engineer. He became one, a very good one but he wasn't happy. So in a mid-life decision he went back to school and became a doctor. What he learned as engineer has helped him in his practice as a doctor.
So to answer two of your other questions in the instance of my friend he learned new skills; used those skills. Went back to school to learn newer skills then combined the old and the new skills to make him a great doctor.
If the reason behind your questions is that you are still unsure of what you wish to major in then I suggest that you start with a Liberal Arts Education. You can do this at a local community college and receive a AA in Liberal Arts.
Then two years from now when you have matured some more, which you will, you can enter a regular college hopefully knowing what you want to major in. In this way you will have accomplished all the liberal arts part of any BA degree so all you have left to concentrate on is your major. You will also have saved a ton of money by doing so.
This method also gives you the opportunity to further investigate those areas of interest to you through internship or job followings during semester breaks or over summer breaks.
When looked at by future employers they see someone who has taken the time to feel out what is truly a career choice and not a settling for something that was chosen for them or something they thought they wanted. This is a plus in this very competitive job market.
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