What Zen practice affirms for me is how important it is to have regard for our environment. While it may strike some as rigid and superficial to clean one's mat and cushion off every time a meditation session is over, it's really part of the practice of paying attention to what's happening right here and right now. My teacher Samu Sunim stresses this often. It matters that I stand dead center and right in front of my cushion each time I bow. It matters that the mats get cleaned before every Sunday public meditation service, even if no one shows up.
If we can have this kind of regard for every aspect of our life, this can have an impact on our practice and on our mind. Good habits on the outside are naturally part of what's inside, and vice versa. There is no separation.