I thought I was really good at decluttering.
But I found myself not able to throw away the used lipstick from my favorite brand for long, thinking I would use the left over parts some day (which I guess you could assume, never happened)
After taking photos, I was able to let them go.
Somehow, taking photos of the stuff that you cannot let go really helps you to detach yourself from the things. If you cannot let go, try taking photo. It really makes the process a lot easier. And after you finally let to, you will feel a great and free!