When it was her own doing, she was always tempted to skip a day, or just glance down, then get back to the ground. Kel had to force herself to keep her vow.
Tamora PierceWhy does this mean so much to you, Jon?" The Prince turned. "Because he's my friend. Because I always know where he stands, and where I stand with him. Because I think he'd die for me and--and I think I'd die for him. Is that enough?
Tamora Pierce