How available are you ? How interested are you in others, especially those quite different from you? How flexible are you? Do you usually think you already know how things are going to turn out? Are you willing to try something new?
Openness involves active imagination, aesthetic sensitivity, attentiveness to inner feelings, preference for variety, and intellectual curiosity (wikipedia).
Practice openness by keeping your mind open to ideas and experiences without expecting predetermined outcomes. Create experiences where learning means being receptive to new possibilities, without prejudging them. You can increase your openness when you learn by practicing empathy. When you teach, create activities where learners put themselves in another person’s situation. Open yourself to all possibilities by understanding other people’s feelings and ideas.