Life events, stress, and anxiety can lead to sleepless nights for everyone from time to time. To be diagnosed with insomnia, a patient must experience trouble falling asleep, trouble remaining asleep, waking up too early, or non-restorative sleep at least three nights per week for at least one month. Sleep problems affect one-third to one-half of the population, while chronic insomnia affects about 10 to 15 percent of people.