When busy with day-to-day distractions, when unfortunately there isn't time for deeper reflections and prayerfulness, crossing one's self, with reverence and thoughtfulness, is a prayer in itself, full of meaning. It is centred on one of the deepest mysteries of the faith - the holy trinity - and it can only ever be good to bring that to mind. I find it an excellent way to remind myself of the true focus of life when the minutiae of daily existence is getting in the way.