How can I discern the will of God?

You can read Sinclair Ferguson’s book on that topic, Discovering God’s Will.

It’s an interesting fact that problems relating to finding out God’s will is a very twentieth and twenty-first-century problem. If you went back into the seventeenth or the sixteenth century and looked at their sermons and books, they were not preoccupied with knowing God’s will.

The answer to those in the sixteenth and seventeenth centuries was that once you knew and understood Scripture, you would be able to discover 99% of the answers to the question, “What does God want me to do here?” This is because the answers are mostly ethical and moral issues to which the Bible has sometimes specific, or sometimes general, things to say.