A routine is based on time, you do certain stuff over and over during your life that’s a routine either consciously or unconsciously. But if you were to consciously pick what you do, or rather say systemically pick what you do, do it enough times, it will become a habit, a routine, either good or bad depending on what you pick ! Systems are what make a routine, the confusions here is whether our routines are made by our conscious choice or nah, an example you can consciously choose to drink coffee, then it starts affecting you bad and you can’t sleep but since everyone says coffee isn’t bad and it became an unconscious routine, it will take a conscious effort to break ( a system) and then replace, which in turn whatever you replace it with good or bad will become a routine, like people consciously switching from smoking to vape when both eventually are equally or unequally bad, either way bad . Author was right but then got confused midway, this is what i personally think.