So, for instance, they will fix their gaze on an apple that falls upwards from a tree, rather than down towards the ground.

It may sound strange but try fixing your gaze on someone's ear rather than their eyes.

Standing with his feet apart, he wraps his hands purposefully around the broomstick and fixes his gaze on the middle distance.

Keep the gaze fixed on the flame without being distracted by outer disturbances or thoughts.