Check for eligibility and consent for participation: the investigator will send mails to stroke survivors who had a stroke between the past three to 24 months to invite them to take part in a survey for post-stroke fatigue and depression. For those who have post-stroke fatigue and do not have severe depression, they will be invited to a face-to-face meeting with the investigator. At this meeting, the investigator will further check the eligibility of each potential participant and answer his/her questions about this study. If the potential participant is willing to take part in the trial, him/her will be asked to sign a consent form for participation.