How To Write A Diagnosis Letter For Mental Health . The following are sample letters that may be used in the event of a crisis, including letters for staff, parents, and scripts for students. The basic concept is that the mental health condition (or physical or other condition) is only one aspect of a person’s life, not the defining characteristic. Letters of Reference BluePrintForLife.ca from www.blueprintforlife.ca The following are sample letters that may be used in the event of a crisis, including letters for staff, parents, and scripts for students. Naturally, she thinks of you. The worker may want to speak about parts of the position that are testing a mental health issue.