Planning ahead is necessary if you are going to achieve any significant goals. However, things change and circumstances interrupt. Passions evolve and change over time with increased experiences and knowledge. It is true that "The only constant in this world is change." It is very common for college students to change majors in the middle of their college experience. You will find that college councilors will encourage new students to take the general education classes that are common to most degrees during the first couple years because of the frequency of which passions change. I personally changed my Major 4 times (once each semester) during my first 2 years and still got out in 4 yrs. Even if you end up taking a few extra classes, you have learned something. It is not even uncommon for people with degrees to decide on a different career after they graduate. What is important is that you don't settle. Keep your options open and talk to councilors, recruiters, other students and professors. Use your time to get an understanding of what is really involved in the job/career you are seeking and in the process you may surprise yourself and find something you like even more. Good luck!