An Internet company through a questionnaire to log on the psychological doctor's window website for psychological help of the people surveyed. The results showed that 46 percent of those who stayed on the site for six months or longer reported feeling better after interacting with the site. 
People who log on to the site in a good mood log on more actively, while those who don't tend to leave.
 it is more effective to improve people's psychological state if they log on to the website for a longer time than if they log on for a short time.