I didn't ask for simple. I asked for precise. Simplicity is the opposite of precision. You still haven't elaborated on what it means to "treat" something as sacred. IOW, what actual actions does one engage in? I know what sacred means. I don't know how to "treat" something as sacred.
The point is to force yourself to do things that are in your own best interest, but which requires effort on your end. It could be stuff that you often forget. We all have issues with laziness. That´s just normal. We often forget or can´t be bothered doing stuff, we should but don´t unless there´s some external threat.
An example is treating your own children´s rooms as sacred. To prevent you from just barging in. You want them to feel respected by you. So you put a rule in (that you don´t really need to do) in order to help remind you not to just walk in, and always knock. To re-enforce it you can give yourself rewards and punishments (that only you know of). This was an extremely basic use of sacredness. But this is just to make a point.
here´s another example. If I work from home I need to role-play that I´m actually at work. I have to get up the same time I always do. I have to dress up like normal, and I have a home office that I work from. I never sit in that chair unless I´m working. If I do it any other way, I´m horribly inefficient. I´ve tried. Whether or not you call this sacredness is irrelevant. It´s the same mechanic.
We call something sacred because it´s a handy way to label it. If you say to someone that something is sacred to you, they know that it´s super important to you and that´s it´s no point messing with you about it. We often use the term sacredness quiet flippantly about people treating rituals as sacred, like having a beer after work on Fridays. But it´s not flippantly. This is exactly what sacredness means. It´s a ritual that is super super important to you. That´s all it means.