I'd only heard the word "Discernment" a few years ago when I was describing how hard it was to hear, learn, exam, and prayerfully dissect my "hunches"/messages/intuition for sharing with others. The leader of the women's Bible group finally gave me the name for this process and my gift.
Basically, it's determining if something is of God/Holy or NOT of God (of the Devil, of the world, of our feelings, etc.). With the work I do, knowing whether something is intended to be a blessing from God that I should share or a evil detriment to the other party is paramount! I refuse to do evil while I must do the sometimes uncomfortable job that I've been called to do as a child of God. I have the gifts of discernment & exhortation. I often am called out to say or do things that seem out of character or odd, for the glory of God.
What are your spiritual gifts?
Here are 2 spiritual tests you can take : http://www.elmertowns.com/spiritual_gifts_test/ OR
Here's a list: http://mintools.com/gifts-list.htm#discernment
How do they bless your life? How do you struggle to use them.