The will of God is discovered primarily through God's Word --- its precepts and principles.
In addition, many Christians who want to discover the will of God focus on the areas of what they should be doing. Actually, what they should be focusing primarily is not on their doing but their being --- character.
Christlike character first then the discovery of God's will second. Once you have the character it is easy to choose the course as to which you will take. In most cases, our struggle is not really about what to do --- many a time it's plain and clear. The real struggle is really with ourselves. We (because of our characters) want to do something else.
Ro 12:2 And do not be conformed to this world, but be transformed by the renewing of your mind, that you may prove (or know by experience) what is that good and acceptable and perfect will of God.
