many people suffer from insomnia, which is the inability to fall a asleep or stay asleep. There are several causes of insomnia. one of the main causes is stress. When people feel stressed or nervous about their work, for example, they may not be able to fall asleep for many hours or they may wake up during the night and not be able to fall asleep again. when people do not have enough sleep, it can affect their mood, making them irritable or depressed. insomnia can also have a negative effect on concentration and job performance. Therefore, finding help for insomnia is vary important for people who suffer from it.