One of the most important things that you would need to think about would be how you would make an income AND staying in a positive state of mind. Getting a good job can be difficult especially in hard times when different businesses are struggling financially, but with all the possible failures that one may have, their is a job that will be right for you. It is the same as staying in a positive state of mind, you can't let all of the possible bad things hold you down, the only thing you can do is staying positive and push forward.
I think the most important thing is to be prepared. Or as you so graciously put it, "ready for anything." So you're on the right track!
So, how do you move forward? Well, have you talked to your high school career counselor? Do you know your strengths and weaknesses? Do you have any idea what you want to do? Do you have any mentors to meet with? Do you have a five year plan? Do you have a one year plan?
Those are some questions to start with. Knowing and planning. Be flexible and be committed!
Hope this helps!