Decisions, Decisions

Frank and I are facing some big decisions in the next several months concerning our future, jobs, finances and schooling. This is one of those big ones that you mull over and get stomach aches about and put off until you have no time left to waste. I have a hard time with these, not putting my emotions ahead of logic, and thinking about what is in our best interest for all of us...all 4 of us now, and I admit, I'm a horrible worrier. I feel like praying about it makes me feel better and less worried; however, at the end of the day, I know God gave me a brain and he expects me to use it. I just wonder how much of my personal desires should play into those decisions. Sometimes, I think perhaps I rely too much on the advice of others, especially certain people in my life whose approval I seek moreso than others. It is also interesting to think back on decisions I've made, and even though in hind sight it seems like it wasn't the best choice, God has always taken care of me. He is amazing that way, so why does it still seem so hard to trust him when we get placed in these decision making situations over and over again? Sorry for such a heavy post, and I know I'm kind of rambling, but if anyone has any advice on making these huge, sometimes life changing decisions, I'd appreciate it.