Insomnia Most people have trouble sleeping once in a while. Stress, schedule changes, illness, pain, medications, caffeine, or anxiety can all affect sleep. But when trouble falling asleep, staying asleep, or waking too early happens often, it may be insomnia. Insomnia is more than “just being tired.” It can affect your energy, mood, focus, memory, work performance, appetite, and overall health. The good news is that many sleep problems can improve with the right routine, lif