The affairs of the heart - the longings of life

There are are deep longings in our hearts. We try to fulfil them in many different ways. We all want to be happy, successful, intimate with others, healthy, safe and whole as people, attractive and popular, satisfied and content, in a place that is home to us. How have Christian thinkers like C.S. Lewis (writer of the Narnia stories) understood these longings? Can these needs be met? And how can they be met?