Yes, I seem to cycle like this too. Monday for me was very productive. Actually got 5 of the 6 items on my checklist done (actually wrote a checklist too). However, the next 3 days have been low production days. The only things I seem to do that at least makes me FEEL a little better about these cycles are: 1) be tuned-in recognize when I am in the zone and then totally ride it. Get everything done that I can possibly think of. 2) Each week pick some mundane task that I never seem to finish or pay enough attention to and make it a point to do SOMETHING each day on it. Even if that something is just 5 minutes. At least that was I at least feel like I'm doing something, when the mental noise starts to invade my mind and I start saying how overwhelmed and lazy I am.