Unnecessary attachment to a physical thing.

As I was turning over my kitchen I remembered something that I read in a Sefer by Bilvavi Miskan Evneh about the pain that we feel separating from the physical world after we die.  He mentions that a Tzadik has no problem with this, is is like taking off one set of clothes and putting on another.  As I was getting rid of my extra chometz I was thinking about how difficult this has been in past years.  It made me feel like I was parting with something of value, that I had invested in and didn't want to get rid of.  I realized that this feeling of attachment to a physical thing has caused me unnecessary and silly pain.  By emotionally detaching from it, and declaring it valueless in my mind, I could make the turnover much easier.