Do you play sports or go off adventuring in your spare time? I drew on experiences from the rugby pitch and some of the times I've got lost or stuff has gone wrong out hiking.
But if not you should have experiences from work to talk about. The time you stayed really late to meet a project on time, or when you stepped up to organise a project because no one else was taking the initiative etc.
You've got to go out and take the opportunities to get out of your comfort zone and it'll all just come naturally.