Ah, senior year of college. You thought that senior year of high school was hard, heck you thought high school was hard in general, but now you've made it through four, or more, years of university and you're ready to graduate and be done. Planning your life after college is definitely 100 times harder than planning the rest of your life during high school. You have no idea where you're going to go, or what you're going to do with this degree that you just spent a butt-load of money on. You continue to wonder what your life would be like if you had a different major. Maybe you chose your major because you knew that it would get you a good job and a good paycheck after college, and maybe you really did just choose the major that you were most passionate about.
If I have learned anything about life on all of my years here on this, the planet Earth, then it's that people change and so do your ideas, desires, wants, and needs. It doesn't matter how much you try, or want, to avoid it, you're going to change and the things you want to do are going to change with you. College is all about finding out who you are, and sometimes you realize that you're not always who you told yourself you were. Let me give you some advice about trying to plan the rest of your life as you approach college graduation: It is more than okay to change your major, add a new minor, or change your emphasis. Whether you're a freshman in college, a senior about to graduate college or someone who graduated two years ago, it is never too late to realize that you aren't passionate about the same things you used to be.
However, don't just change your major because you feel like your life needs change. Get a new haircut or buy some new clothes, but don't put yourself into any more financial debt than you absolutely want to afford. What I mean is, think about what you will have to go through financially before you decide to add three more semesters to your stay at a university. Consider how many more student loans you'll have to take out, the scholarships that you will qualify for, and if you're at your school of choice on an 8-semester scholarship, how is it going to affect you financially if you use up all 8 semesters before you're done with your degree.
I don't mean to encourage you to pee into the wind without thinking about how wet your pants are going to be afterward. Maybe you could finish the degree you're working on now and come back right after you graduate. Also, if you're not too far away from graduation, maybe you could afford to add a minor and take 15 credit hours instead of 12. Consider all of the options, and talk to a financial advisor at the school to see the options that you have in reference to money. Maybe you do want to throw caution to the wind and take out more student loans without a care in the world, that is OK. Maybe you just don't want to put yourself into more debt and you are just going to graduate and then see what happens, that's totally OK. If you want to change your major and let nothing stop you, then, in the words of Shia LaBeouf: "Just do it."
Always remember that you are a human being and you can do anything you set your mind to.