If one of your Someday/Maybes is to add the eBook to your Reference Material, today would be a good day to do it cheaper:
https://www.amazon.com/Getting-Things-Done-Stress-Free-Productivity-ebook/dp/B00KWG9M2E/
Make it an all-day event on your calendar for today.
https://www.amazon.com/Getting-Things-Done-Stress-Free-Productivity-ebook/dp/B00KWG9M2E/
Make it an all-day event on your calendar for today.