I fall asleep fine but wake up but analyze: what's causing middle-of-night waking? Map the wake factors: anxiety, environment, sleep apnea, bathroom needs. Calculate: which factor is most likely culprit? Show me the cause identification: these signs indicate this cause. Give me the targeted fix: this intervention for this cause. Include: difference between sleep onset and maintenance insomnia, specific causes of middle-night waking, and targeted solutions.