Experience alone doesn’t make a great teacher. A good learner also observes how he’s handling the experience, processes it afterward, and incorporates lessons from it into his life.
Given this, think about one of your recent writing sessions. What writing difficulties did you face during it (Maybe it was coming up with a plot twist or writing pithy dialogue.)? How did you handle them? What did you learn from the way you handled those difficulties? How might you address those difficulties differently the next time you write?