K. Hicks, David Jakle/Getty, choness/Getty, Tyler Le/BIKimberly Hicks balances a demanding nursing job with raising three young children.Her 12-hour shifts often leave her feeling guilty for missing time with her kids.Despite the challenges, Hicks values her work and feels the long hours are worth it.This as-told-to essay is based on a conversation with Kimberly Hicks, a 39-year-old registered nurse from Northern California.