[Thriptic]

Are these feelings correlated with anything? Do you feel this way after a particularly tough time at work? Do you feel underlying anxiety about your startup?

I generally ascribe to the "show up and do something" philosophy on days like the one you're describing. I tell myself that I can have the rest of the day off guilt free if I just do one task that I've been meaning to get done. For me the biggest challenge to working is starting, so generally once I start working on that one task, I find new energy and will continue working once I finish it.