Listen when that little voice in your head tells you to power through today: and then take action! Work through lunch or stay late to finish up what you need to do. Any further postponement could leave you painted into a corner, with no options. You have some nice momentum right now, and you shouldn't let it go to waste. Sure, you might prefer taking it easy this afternoon, but you really shouldn't put things off any longer. You'll sleep better knowing you got everything done.