As she plunged down toward the forest roof in a long shallow dive she reflected that there was possibly something complimentary in the way Granny Weatherwax resolutely refused to consider other people’s problems. It implied that, in her considerable opinion, they were quite capable of sorting them out by themselves. Some kind of Change spell was probably in order. Magrat concentrated. Well, that seemed to work. Nothing in the sight of mortal man had in fact changed. What Magrat had achieved was a mere adjustment of the mental processes, from a bewildered and slightly frightened woman gliding inexorably toward the inhospitable ground to a clearheaded, optimistic and positive thinking woman who had really got it together, was taking full responsibility for her own life and in general knew where she was coming from although, unfortunately, where she was heading had not changed in any way. But she felt a lot better about it.
— Terry Pratchett, Wyrd Sisters
For context, Magrat is on a broom nearly depleted of its magic after the Disc’s first in-flight broom refueling, and she is about to make friends with the ground.