Thanks Matthew for your great question. I'd like to say that my response would be definitive and declare that I hold the one true "THE first step," but will hopefully give you an idea for A first step teachers could take. Maybe start by committing to celebrating student questions more than student answers. When I made this shift in my teaching the joy and laughter in my classroom went upwards. Questions are more fun than answers because they are filled with fruitfulness and potential, while answers are pruned off thinking.
As I said, this is just A possible first step, of course there are others that might be more fitting for other teachers, and for that I would like to ask the readers for their thoughts on this, collaboration is a great way to get at more truth.