Faith vs. Logic

Something I have been challenged with a lot lately is faith. I may have discussed this previously in my posts, but sometimes God repeats Himself with me so what can you do.
On Monday, I started my new job with Grand Homes. I really enjoy it. I get to work with people in a completely different arena. The hours are different but not too bad. It's really a great set up! Yesterday I began thinking, "What if I made a career out of this? What if I become a salesperson and love it and do this forever??" Those of you that know me are probably laughing right about now because you know that I am always looking for the next step. Instead of floor plans, I flip through life plans, trying them on, seeing which one fits for the moment. In the midst of this stream of thoughts, I had a freak out moment. What about going overseas? What about travel? How am I ever going to provide for my future family if I am trapsing across Africa and Europe all of the time? What job would let me do this?"...and it just went on and on.
I guess my question is, how does one survive on faith alone in society today? I personally think that God has given us all brains and the ability to make decisions. I don't think I have to have a burning bush to pursue different career paths. We are not robots; God gives us options. However, where does faith come in? I have been so jaded by people who live on faith alone. I have seen one family in particular destroy their finances and make their children miserable because of stupid decisions, all the while claiming that "it will all be okay because God will provide." And He always makes sure the kids aren't starving or naked, so I guess he does.
Maybe I am too uptight about money, but I just have this fear of destroying my family's future. And I have to admit, seeing some of the guys my age not even thinking about money makes my stomach curl. I am not materialistic; I don't care about wealth. But I do care about responsibility and taking care of business. My dad worked 80 hour weeks at one point just to try to provide for me and my mom, plus driving a milk delivery truck, getting mugged in the process. Yes it sucked for the time, but I know that due to his hard work I was able to have a reliable vehicle and go to the college God was calling me to.
What are your thoughts? I would like some feedback. Is there a balance, and, if so, what is it?