I don't think that an empty day is just what it is... empty. And I don't think that self is wasted on an empty day. Because every thought, movement, word even the tiniest of it matters. Whatever life that comes out of self resonates in time and leaves its mark on anything everything it lands on... now, tomorrow, the future. Believe it. Because you matter; it's not the day -- it's all about YOU.
Every thought that passes through your mind could have the potential of a bright new idea, invention, creation, inspiration, knowledge which in its own time will give birth to wonder, awe, and magic. Every word spoken could in its own way inspire, encourage, strengthen, influence, or initiate a blessing. And each enlightened movement you do sends off a message to the universe to carry out the noble thought behind it.
All these even on an empty day like today.