According to recent surveys, almost half of all Germans report having sleep problems. Most affected individuals suffer for months to years from tormenting periods of wakefulness in bed and try everything possible to escape the vicious cycle of insomnia at night and chronic exhaustion during the day. Once the cycle of sleep disturbance has taken hold, it is often very difficult to break free from it without competent medical help. This is where Dr. Michael Feld's guide comes in: Since each sleep disorder is individual, possible causes for nighttime wakefulness are first explained, and readers can find out through a self-test what personally contributes to their often tormenting insomnia. To provide relief, various approaches and methods are then presented that ensure effective and beneficial improvement of nighttime sleep.