I am a cluttered mess. When my room gets dirty, it gets really dirty. But I don't like living in a clutter. I actually hate it. To me, my room is an expression of myself and my energy. When my room is cluttered, my energy is cluttered.
In a messy place, the energy gets bogged down. Negativity builds up, and it makes the area very hard to stay in. In an environment like that it is hard to do work, both physically and magically.
Cleaning can be a very relieving and purifying process. If done while actively focusing on getting rid of the negative energy of the area, it will change the atmosphere dramatically. I have found that having my living space clean drastically decreases my stress and anxiety (to things I have a lot of problems with).