You might want to look at "trees of hope". These are large murals in in-patient mental health settings. Previous patients write positive things for the current patients.

These are more formally known as "discharge messages", which is part of "safe wards".

Here's one version, but there are very many: http://www.dorsethealthcare.nhs.uk/WS-Dorset-HealthCare/Down...

http://www.safewards.net/interventions/discharge-message

Currently in England you have to be very severely ill to get admitted to a ward.