Digital Management of Sleep Health

The goal of this clinical trial is to explore whether cognitive behavioral intervention for insomnia(CBT-I) realized through audio, video, and articles on smartphone apps(\"ForSleep\" developed by the investigators) can improve the sleep quality of insomnia patients. The main question it aims to answer is: Does CBT-I delivered via smartphone apps improve sleep quality evaluated by scales in patients with insomnia? Investigators will compare the treatment group receiving the CBT-I intervention via smartphone apps to a control group receiving relaxation training to see if there are significant improvements in sleep quality. Participants will be asked to: Use an app(\"ForSleep\") designed for CBT-I to follow a structured therapy program. Complete daily sleep diaries and periodic scales to track their sleep quality.