Some people are very effective at using a methodology like GTD to track what are the most important things to do each day. However, the rest of us tend to simply focus our attention on the most recently arrived emails in our inbox. Luckily there is a really useful service called NudgeMail that I recently discovered which will send you email reminders on a scheduled date.
This free service is amazingly easy to use. For example if you wanted to be reminded that you should return your library books next Saturday you simply send an email with the subject "Return library books" to "Saturday@nudgemail.com" and next Saturday you will receive a copy of your email sent back to you. You don't even need to sign up because the one piece of personal information they need is your email address and this can be retrieved from your first email. They accept a wide variety of formats to specify the reminder date and time - they will send you a full list of acceptable formats in response to your first email.
I have no association with the people behind the service, but if you try the service I know you will find it useful. Maybe your first email can be emailing "email@example.com" with a subject line of "leave a commend on Brian's blog thanking him for recommending Nudgemail to me" :-)