Today is the first day of October. If you are using The Cycle system from Time Management for System Administrators don't forget to review your life- and long-term goals and do any other monthly routines.
Being the first of the month, sites running mailing list software like Mailman will be sending you reminder notices about which mailing lists you are subscribed. Take this time to pick a few lists to remove yourself from. What high-volume list have you been filtering off to a folder and ignoring? What low-volume list did you join ages ago and aren't getting any value from? What technology mailing list are you on for sentimental reasons even though you no longer use that technology? Today is a good day to unsubscribe from these mailing lists.