Move everything from the space and clean; then force yourself to make the decision about whether it's worth putting the items back.
This will not only pay dividends in terms of organisation, it will also remove unhealthy dust and dust mites from your living space.
2: Bags are for transporting, not storing
Don't toss things into bags when you're tidying up and then never go back to empty them. Among the many problems with using bags to corral things you don't know what to do with or are too lazy to put away is that you simply forget that you have the stuff and then go out and buy more. It's easy to see how this can become problematic.
When you get home from shopping, unpack your bags. Likewise, luggage should be emptied within 24 hours of returning home. Purses and work totes that are used daily should be cleaned out and organised at least once a week.
If you change purses or work bags frequently, it's best to clean out your previous bag completely, instead of just dumping the contents from one bag to the next without sorting through them. Yes, this will take an extra few minutes, but it will also save you time later. And you may even find money you didn't know you had or a pair of sunglasses you had forgotten about.
And if that isn't motivation enough, consider this: a 2013 British study found women's handbags carry more germs than a toilet seat.
3: Do what makes sense for the way you live
People get caught up in the notion that certain things belong in certain places in a house - tools should be kept in the garage; brushes, combs and headbands belong in a bathroom; and suitcases should be stored in the attic. But if you're putting things in places that don't actually work for the way you live, it's going to be a struggle to stay organised.
It's okay to keep a hammer, screwdriver, tape measure and pliers in a kitchen drawer or in a hall console table. It's totally fine to have a basket of hair accessories near the front door, if that's where your kids comb their hair before heading off to school. And if you travel frequently, leave your suitcase in your wardrobe - or a spare bedroom wardrobe - so it's easy to grab when you need it.
Although it seems as though there are rigid rules everyone must follow to become and stay organised, there really aren't. The key is to find the best and most efficient solution for you and your family and go with it. It's when you are crippled by indecision and the need for perfection and therefore don't do anything consistently that things can become a disorganised mess.
Thinking less about following a particular philosophy and more about how you use things in your daily life will make organising more effective and effortless.