When chanting is attentive, it means that we have made our mind our friend.
See through the eyes of the scriptures and you will see within that tiny atom The Lord residing in there.
So japa is not just the time to sit around, just sitting the round. Your whole being, your whole existence is being used in action. Body, mind and intelligence. So use the intelligence.
Due to laziness the mind doesn’t want to chant. Laziness could be of varieties. You should be around those who are enthusiastic. Then what happens? Chanting is enthused and your laziness runs away .
If we are chanting out of humility, thinking humbly that I am chanting by the grace of my superiors and my spiritual masters, by Krishna’s mercy, then this is a good kind of mentality.
When we are attracted by Krishna, or Krishna’s holy name, then we could kick the temptation to break the regulative principles.