2. Beware the rabbit hole. Whenever considering following a tangential link or taking time out from work for some infotainment diversion, fully consider that it carries a risk, which you cannot necessarily assess or control, that it will end up taking you a long way down. Take that first step by all means but in full consideration of the expected (statistically speaking) cost of doing so.
3. Rename your "to read" list "sounded interesting". Come back to it if something on it ever bubbles up from your subconscious as being relevant to the task at hand. Maybe.
4. Meditate, walk, write. These three activities above all others seem most widely recommended as reaping huge rewards in this arena, with a daily dose of around 30 minutes being a typical prescription for each. This is not from any long term personal experience unfortunately, but there's a near certainty at the back of my mind that a regime of these three each day would be transformative for me. A couple of observations on these I can draw from personal experience; the first two activities can be combined; and on the writing, pen and paper is to be recommended, and committing to throw it out at the end of the session is a marvelous cure for writers block.