Proactive Planning

Today I found out that I'm 3 credits away from graduating. Which would've meant I could've filled up my last semester of high school/free college with meaningless, but interesting classes, like Nordic Mythology and the Viking, Lord of the Rings Analysis, Beginning Norwegian, or Scuba Diving.
 Or even something meaningful like Intro to Literary Scholarship (which isn't what I thought it would be but still would've been interesting), Symphonic Literature, or other Contextual studies... I'm bummed out about all of this. I could've graduated early and even if I technically needed to be in one class, one credit of gym wouldn't have killed me. Now? I'm just irrationally upset about having to take an economics class. BLEH>>> I plan on being a music major and the only options my current university offers is international economics or Into to Business and Statistical Econ neither of these will help me in any aspect of life.
  In other news I'm wanting to add another major or minor. If I stay up north, it will be German or Scandinavian Studies. If I go to a real town for the rest of my post-secondary education I will probably add some sort of language or just get a further concentration in musicology which I can't do where I am because they only offer certain courses and these vary from term to term.
 
My message to the young or those who need planning advice is that you should go over all of your options and plan far into the future with multiple backup plans. There is no shame in being over prepared.