What I do when I am not chanting affects the quality of my rounds. For example, if I am critical of devotees (or even of non-devotees), it will be more difficult to chant good rounds.
If my mind is engaged in activities from morning till night that have nothing to do with Krishna, my attraction to chanting the next day will diminish. However, if I make an effort to be as Krishna conscious as possible during the day, my rounds the next day are easier to chant and more relishable. My activities today are linked to the quality of my japa tomorrow.
One devotee told me that if he goes out and gives people the maha mantra, his rounds are always better the next day.