Partitions

Yesterday night I was struck by a fit of organization. I did my papers, the accounts for the month, separated the salaries and bills to be paid into neat piles and into separate envelopes, stacked the clothes that had come from the laundry and the cleaners into neat piles and proper shelves (warm clothes, coats and jackets, stoles, formals, bed linen), re-organized my work purse, the papers to carry to work, so on and so forth. I've finally done it, I have managed to take care of my paperwork successfully for the past 6 months. I wonder why partitioning feels so good?