The short answer
You can't rest because you haven't given yourself permission to rest — not really. So you hover in a guilt loop that drains you without producing anything. The fix isn't a longer weekend. It's drawing a clean line and then honoring it, the same way you'd honor a work deadline.
You're caught in no-man's-land — not working, not resting, just burning energy on guilt. Research on sustainable careers points to something clear: recovery isn't a luxury bolted onto the end of a productive day. It's the thing that makes the next productive day possible. Without real rest, you don't recharge — you just run down more slowly. The in-between state you're describing isn't laziness. It's what happens when rest has been reclassified, in your own mind, as failure.
Marcus puts it plainly: 'Give thyself leisure to learn some good thing, and cease roving and wandering to and fro.' That restless hovering — he saw it too. The wandering isn't physical for you; it's mental. And his answer wasn't to push harder or rest harder. It was to stop letting the noise outside (or in your case, the guilt inside) pull you off your own ground. Leisure, to him, wasn't empty time. It was chosen time — time you claimed on purpose.
This week, try one thing: pick a specific window — say, Saturday morning from nine to noon — and write it down as 'rest' the same way you'd write a meeting. When the guilt hum starts, don't argue with it. Just say, out loud if it helps, 'This is the time I chose for this.' You're not ignoring work. You're keeping your word to yourself. That's the skill — and like any skill, it gets easier with practice.