Once you learn to choose your belongings properly, you will be left with only the amount that fits perfectly in the space you own.
About tidying up a toy box, you should let your kids experience the selection process by touching all of their toys. It's also important how they throw away their toys. They can earn a stronger sense of valuing things when they throw things away with respect and appreciation.
I'd like to tidy up the entire planet. I would go anywhere if there were something that needs tidying.
It's important to understand your ownership pattern because it is an expression of the values that guide your life. The question of what you want to own is actually the question of how you want to live your life.
It's going to be labor-intensive and time-consuming, but you need to take all the books down and put them on the floor. Take them down and spread them in one area. Physically pick each book up, one by one. If the book inspires you, keep it. If not, it goes out. That's the standard by which you decide.
I have an image in my mind of what I want, whether it's a light jacket or a one-piece. I can tell if what I want is in the store right away.
