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This is also one of the biggest lessons I've learned about keeping a clean house as well.
Many of my family members have a lightweight hoarding problem, so cleaning up is nothing short of a monstrous task.
It wasn't till I was on my own that I learned a simple rule - cleaning is first and foremost an elimination process. Get rid of stuff you don't need, and you have less stuff to clean.
It's simple but I didn't realize it for years.
And applying this idea to productivity is a smart thing to do. If you have less tasks to worry about (like "urgent" ones), the ones that matter will be done quicker and more effectively.