E-mailing yourself reminders for future actions with Google Calendar - Unclutterer
Simply stated, she suggests that if there is a future action you wish to accomplish (call your mom each Sunday, pick up the dry cleaning, follow up about a job lead) that you add it as a single or recurring event in Google Calendar with an e-mail reminder. In Google Calendar, select "Create Event" in the left-hand column be sure to set the reminder to "E-mail."