We, and I think I'm speaking for many writers, don't know what it is that sometimes comes to make our books alive. All we can do is write dutifully and day after day, every day, giving our work the very best of what we are capable. I don't that we can consciously put the magic in; it doesn't work that way. When the magic comes, it's a gift.
Love is another kind of power, which shouldn't surprise you. Magic comes from emotions, among other things. And when two people are together, in that intimacy, when they really, selflessly love each other it changes them both. It lingers on in the energy of their lives, even when they are apart.
The magic of purpose and of love in its purest form. Not televison love, with its glare and hollow and sequined glint; not sex and allure, all high shoes and high drama, everything both too small and in too much excess, but just love. Love like rain, like the smell of a tangerine, like a surprise found in your pocket.