And the other things on the face of the earth are created for man and that they may help him in prosecuting the end for which he is created. From this it follows that man is to use them as much as they help him on to his end, and ought to rid himself of them so far as they hinder him as to it. When we see this written down, it may seem fairly obvious, but it is amazing how easily, without even being aware of it, we can lose the focus on praising, serving, and reverencing God, as our first priority. Although they may not always seem to be clearly defined in practice, there are six steps in the process of discernment. Praying for indifference.
Indifference is a technical term.
It doesn't mean I don't care two hoots. Even when we are committed to doing what God wants, we can still have an experience of struggling with our own counter-preferences. This is why the discernment must always take place in a context of prayer. Live as if this were your final decision, keeping a journal. Note both the positive feelings, and the negative feelings that arise consistently, over a period of time.