To maintain the lucid dream state, you must modulate your emotions.

“You are what you let yourself become,” said the inner advisor. That answer satisfied me completely: The living of life was an allowing of self.

The philosophy of don Juan might be summed up in these words, spoken to Castaneda: “[Y]our idea of the world . . . is everything; and when that changes, the world itself changes.”3 Don Juan constantly pushed Castaneda to consider new and world-changing ideas and to become more mentally flexible.