How To Write Death Note Letters . Any individual present at the moment of death. How to write a goodbye letter when dying be honest about your illness, diagnosis, and prognosis. The Death Letter Project Neill Duncan — The Death Letter Project from www.deathletterprojects.com A condolence letter is one of the most effective ways to communicate your sympathies to the concerned individual. It will help you focus on what is. Start with the person’s full name, state that they have died, and mention the date of death.