While I wholeheartedly believe in using your time well every day, I believe just as truly that you can’t beat yourself up for what you haven’t done.
No matter how much time you’ve wasted in the past, you still have an entire tomorrow. – Denis Waitley
Let go of the yesterdays that weren’t so productive. Tomorrow is a great day to start making changes. Commit to yourself that you’ll start tomorrow, though, not some day, because then you’ll keep feeling bad about not getting things done.