Great thoughts on how distractions are the real barrier to productive work. Very in line with my own thoughts and journey moving from uber-GTD, then back to simple focus-based productivity. Instead of wrangling lists, now I filter out distractions. The simple method really is to pick a task, then spend time doing it until it’s done.
Lists are helpful to remember what to work on next, but if managing the list becomes the main task - you’ll never get much work done.