For example, if you quit at the first sign of fatigue when you exercise, you miss the chance to become more fit. Exercise after exhaustion is the most efficient and productive time for physical fitness. This is true of relationships as well. God has designed our relationships to function as both a diagnosis and a cure. When we are frustrated and ready to give up, God is at work, revealing the places where we have given in to a selfish agenda (the diagnosis). He then uses that new awareness to help us grow precisely where we have struggled (the cure).
