Before you start writing your unsent letter, you must decide what you are going to do with your finished letter. Even though you are not going to mail it, there are several options.
Some people like to keep their unsent letters as part of their journal.
If you want to keep your letter, you must decide where you are going to write it. You may want to write your letter as a journal entry. Or, you may want to use stationary to make it feel more like a real letter, and then include the letter inside your journal. If you don't want to keep your letter, you have several options for releasing it. You can throw the finished letter in the trash.