Erica Bauermeister said this quote

What did she do that made her happy? The question implied action, a conscious purpose. She did many things in a day, and many things made her happy, but that, Claire could tell, wasn’t the issue. Nor the only one, Claire realized. Because in order to consciously do something that made you happy, you’d have to know who you were. Trying to figure that out these days was like fishing on a lake on a moonless night—you had no idea what you would get.