How important is it that we model positive personality traits?

Arguably, modelling positive personality characteristics is the most effect action we can take in promoting the same characteristics in our students. Modelling openness, agreeableness, conscientiousness, and emotional stability takes no extra effort, and over time it can increase the likelihood of students developing those same characteristics. With habitual practice and reflection, modelling them will be second nature and we have nothing to lose in doing so. They will make a difference in at least some students, and even if they didn't, we are still happier people as a result of our modelling.