Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Future Me - Send an email to your future self
Mini Diary - Simple and secure journal app
Dabble Me - Your own private place to write. A journal/diary to help you remember what's happened in your life.
REFLECTLY - The world's first intelligent journal
Letter to my future self - Letter to my future self is a prominent email scheduling service that gives you the opportunity to create a letter with goals and thoughts for your future self and schedule a date for sending it.