All great human deeds both consume and transform their doers. Consider an athlete, or a scientist, or an artist, or an independent business creator. In the service of their goals they lay down time and energy and many other choices and pleasures; in return, they become most truly themselves.The demands of motherhood especially consume the old self, and replace it with something new, often better and wiser, sometimes wearier or disillusioned, or tense and terrified, certainly more self-knowing, but never the same again.
Lois McMaster Bujold