I've been thinking....

Can we ever get so far out of God's will that we become unusable to Him? Does He allow us to make decisions that will lead us off "His" path, even when we are seeking to do what is right? Does God's Will have only one right way, one right answer?
These questions have come up as I've started to think about what God might have for me after I finish seminary in a few weeks. I don't think it's His purpose for me to serve coffee forever, but maybe I'm wrong! I've talked to friends and people I trust, and they have encouraged me to continue seeking the Lord. It's hard for me to trust my own discernment, though. What if God doesn't make the right decision explicitly clear? Is it possible that He could lead me to a fork in the road where either path could be right, and I just have to choose?
I'll be honest- I don't like to make decisions! I don't like deciding what clothes to put on in the morning, or choosing what to eat for dinner- and do not ask me to choose a restaurant when other people are involved! I would much prefer if God would send me a letter or email, and say, "Jess, I want you to go to ______________ and do _____________." It scares me to think that it might be left up to me to make an informed decision and go with it.
I'm reading a book right now that points out that the most frequent command in Scripture is fear not. I'm not really afraid- yet- but yes, I'm anticipating it. Pray that God will give me a clear answer, or strengthen my faith so that I will trust Him to lead me to the right decision.