Practice saying "No" in a mirror. Do not apologize. Do not explain. "No, that doesn't fit my capacity." The Library Mindset treats energy as a non-renewable resource.
This is a controversial but effective tool. If you are asked to do a task that drains your energy, do it so poorly (on purpose) that no one ever asks you to do it again.
Remove all clutter from your workspace. A "library" is sparse. Remove the second monitor. Close all browser tabs. Turn off notifications. If it beeps, it leaves.
: Break work into 25-minute focused intervals followed by 5-minute rests to maintain peak concentration without burnout. Practical Action Steps The Art of Laziness
There is a fine line between strategic efficiency and pathological laziness. If you are not careful, "doing it badly" becomes "not doing it at all." The PDF works only for self-starters.