“This I choose to do,” she croaked, her breath leaving little clouds in the air. She cleared her throat and started again. “This I choose to do. If there is a price, this I choose to pay. If it is my death, then I choose to die. Where this takes me, there I choose to go. I choose. This I choose to do.”
It wasn’t a spell, except in her own head, but if you couldn’t make spells work in your own head, you couldn’t make them work at all.

– this I choose to do |
Terry Pratchett, Wintersmith