The core 4 method is a systematic, four-part approach to sorting every item you own. This method streamlines decision-making and helps create a clutter-free space:

1. Keep: Items you frequently use or that hold meaningful sentimental value, ensuring they fit comfortably within your current space.
2. Donate: Items that are in good, usable condition but you no longer need, allowing others to benefit from them.
3. Recycle: Items made of recyclable materials that can be processed at local facilities, following an eco-friendly approach.
4. Dispose: Items that are broken, damaged, worn-out, or no longer serve a purpose and must be responsibly discarded.

Link: How to Declutter Your Apartment?