For better or worse, so much of our identity is built around race. So when Sarah Valentine found out at age 27 she is not, in fact, white, that she is mixed-race with a black father, she found it very hard to reconcile what she knew about herself to what the world reflects about being black. She talks with host Krys Boyd to talk about her path to rediscovering herself, which she writes about in “When I Was White.”