There are two views on the topic of decision making and the will of God. The view you learn in the church is called “the traditional view”. I call this view the feelings/intuition view. This view that elevates feelings / intuitions to the level of divine communications from God. The more practical view is called “the wisdom view”. I call this view the battlefield commander view. I am a proponent of the wisdom / commander view.

Let’s learn about the two different views:

[The traditional view is] that God has a plan for our lives and that we receive guidance through methods such as “open and closed doors”, “feeling led” and “the still, small, voice”. [The wisdom view] holds that God does not have an “individual will” for our lives, but rather that all of God’s will can be summed up within two categories, God’s sovereign will and God’s moral will. Basically God’s sovereign will is all the things that god decrees will happen. It is hidden (mostly) from us, and does not play an active part in our decision, although some of it is revealed in the bible. God’s moral will is the part that we must concern ourselves with in making decisions. It is fully revealed in the bible and our decisions must be made within it. We may use wisdom in applying god’s moral will to our lives, or we may be in an area not covered by god’s moral will. We must finally submit in advance to God’s sovereign will, being prepared for him to sovereignty intervene and redirect us through whatever means he wills (see James).

Here’s a bit more from someone else:

Regarding the view that God has a personal will for us individually that we have to discern and find, J.I. Packer says, “The first thing to say is that the idea of guidance is actually a novelty among orthodox evangelicals. It does not go back farther than the last century. Second, it has led people to so much foolish action on the one hand, and so much foolish inaction on the other, as well as puzzlement and heartbreak when the ‘hotline’ to God seems to go silent, that it has to be discredited. Third, it must be said that Scripture gives us no more warrant constantly to expect personal ‘hotline,’ ‘voice-from-the-control-tower’ guidance than to expect new authoritative revelations to come our way for the guidance of the whole church.” (Hot Tub Religion, page 118). As to the point of the question, how do I make decisions, I attempt to make decisions in light of three factors: God’s moral will, wisdom, and my personal desires. If something is opposed to God’s moral will, then I should obviously flee from it. If it’s not opposed, then I consider the wisdom of the choices. For example, would it be wise for me to marry a woman who loves Jesus, though we have nothing else in common? Probably not. If the options pass the criteria of wisdom, then I’m free to choose how I wish. If I’m offered two jobs, and both are honoring to God, and both would be wise to take, then I’m free to choose the job I would like more. I don’t need to put out a fleece or await some other confirmation from God. If it’s moral and wise, then the only question as to whether or not it will honor Him is my attitude. Some examples of this model used in the Bible (in theological circles referred to as the Wisdom Model) are in Paul’s planning of a mission to Rome in Romans 1:9-15, 15:22-24, the Jerusalem Council (Acts 15:1-29), and Paul’s instructions for legal disputes (1 Cor 6:3-6).

The best book on this topic is Garry Friesen’s “Decision Making and the Will of God”. In it, you’ll find a full assessment about what the Bible teaches on this topic.

When I am trying to decide what will be effective, I look at Christian scholars, at their papers, books, and public debates. That’s effectiveness because it is addressed to a non-Christian audience in public with the force of reason and evidence. It is persuasion and it is addressed to rational minds. I want to change the minds of people who have a large influence on society on the whole. I don’t think that offering Christianity as life-enhancement or self-help is really “having an influence”. I think that offering Christianity as truth, with support, is “having an influence”.

So let me be clear about what I believe:

I don’t think that God normally talks to people directly

I don’t believe that life is an Easter egg hunt, filled with clues accessible only to emotion and intuition

I don’t believe that God expects people to discover a specific will for their lives using non-rational means

I think that people make up their own life plan that is consistent with the Bible

The goal of the life plan is to be effective, and there are no other considerations

I think that there are many good things a person can do, but that some are more effective than others

I think that with respect to the goal of serving God effectively, my happiness is expendable

I don’t think that the purpose of doing something for the Lord is to feel good about ourselves

I don’t think that people should choose ineffective things to do just because they like them

I don’t think that people should choose ineffective things to do just because they are good at them

I think people should do hard things that they don’t like – as long as it’s more effective

I don’t think that any course of action is as effective as any other – some plans accomplish more

I don’t think that life is totally unpredictable and irrational and subjective

I think that we can know what is or is not effective by studying and learning about the world

I think life is like a battlefield that must be surveyed, understood and acted upon deliberately

I think that every person is the commanding officer of his or her own life, and each person must study everything they can, make a plan that is consistent with the Bible’s moral prescriptions, execute the plan and achieve whatever they can achieve for the Lord. And the goal is not comfort or happy feelings, but real achievements. Not for the purpose of being saved, of course, because salvation is a free gift of God because of what Jesus did on the cross. Life is more like a battle than a vacation resort or a buffet or a shopping center. God’s will for us is not have happy feelings, but that we freely choose to sacrifice ourselves out of obedience and service to him. In my case, that means studying hard things, making money, saving money, and giving money away to good scholars, sponsoring good events and being persuasive to non-Christians. None of this necessarily makes me happy, but it does work to bring glory to God. I cried when I had to learn calculus, because it was so hard. But who cares? The main thing is that I have money now to sponsor Christian speakers or to give books to Christians to read, and God is happy with that.

I think that it is very important to realize that God is not impressed by our not being smart and not being effective. If we have the ability to be smart, then we should be smart, whether it makes us happy or not. If we have the ability to make money, then we should make money, whether it makes us happy or not. If we have the ability have a great influence, then we should have a great influence, whether it makes us happy or not. There will be plenty of time for happiness after we’re dead. But this life is a time of serving, and we should try to serve effectively, whether it makes us happy or not. With respect to God’s purposes in the world, my happiness is expendable.

Whenever someone questions my goals and plans by saying that I am asserting my will over God’s will, the first question I want to ask that person is this: “how do you know what God’s will is?” and “what is your basis for thinking that my plan to serve will not be effective?”. I want to know if I have misunderstood something about the way the world is, or miscalculated in some way. I want someone to look at my calculations and show where they are going to produce a less optimal result for the Lord. That’s the only concern I have – effectiveness for the Lord. Usually what I have found is that the other person wants to make the purpose of life their own happiness, and it makes them happier to choose what to do moment by moment, without having to study anything or make plans. It’s not that they have better goals (for God) or better plans (for God). It’s that they want their goals to be above God, and they don’t want to make plans other than to do whatever makes them happy.

This article by Greg Koukl may be helpful.

And I also found this summary of the Friesen book useful:

In nine parts.