Around 286 patients with high risk of negative emotion and hospitalization will be invited to join the peer support program. We anticipate that half of the patients will agree (n=143) and be assigned 24 peer supporters on a 5~6:1 ratio. Peer supporters are patients who have good glycemic control and self-care and trained to provide both informational and emotional support to the peer group. For patients who decline to participate, they will be identified as refused peer group and their reasons for declining will be documented. Half of the patients in each group will be randomized to receive 2 personalized feedback reports through the mail.