There's a clear distinction between the nature of body and the nature of mind. Both works on difference premises. One has "distance" or "takes-time-to-arrive effect" whereas the other do not when it comes to a situation. Take an example of say, “office”. Thinking of office and going to the office is different. One is *timeless* whereas the other takes time. In fact, if you are trained in psychic abilities, you can intent mentally to appear in the office instantaneously as compared to the body taking its time to arrive at the office.
To look for something, we have to "search" for it, whereas to look out for the mind you cannot “search it” as it has no form. Similarly, to look deeper into something micro, we have to "do" something to get it. The body, together with the world has concepts of distance and time that cannot be avoided. So if you wish to meditate on the "body" where it is part of the physical world, the "takes-time-to-arrive effect" have to take precedent. For that, when you meditate on the body, you have to "focus", "penetrate", to put the effort in arriving at the subtlety of the body mass, the micro part of it, to find out what is there.
But you can't apply the same principle to the mind. Whatever that has no form, not localise, no colour, not to mention shape — what is there to focus or even penetrate into? Where is then is micro or even macro? The mind has no depth, no layers, nothing for you to "go into". To apply the body principle to the mind is to miss the mark and not understanding both are of different nature.
To arrive at a physical destination, you have to “go”, or even to “rush” if time is not to your advantage. If you try to “rush” to observe your mind, you can only end up disappointed. Either you have the skill to notice the mind or you don’t. It is that simple. A special skill is what you have to learn. A new skill set altogether, unlike what it takes of the physical world.
When we give too much an attention to the body, to its nature, we seldom notice when we give attention to the mind, we use the body reality or body nature to get our result. We, "dig in" or "focus" or "penetrate further" into the mind. We even wish it can just go away, whatever we do not wish to experience, just as what we do to the world nature. That is delusional! Not that we can't, we can. But it is good to remember that anything we can imagine out, its effect too can take place as an imaginary effect. Just an imagery. Another happening in the mind which you are supposed to understand.
The bodyscape is different from the mindscape. There is no deeper, or layers to go into, not to mention "subtle". As it is formless, shapeless and colourless where then is depth or shape or size? Sometimes the mind is referred as “subtle” — a reference in comparison to the body nature — but not subtle in the sense it is minute or small or difficult — it is only seemingly so when you do not have the skill to notice it directly. And the fact is that you can only notice the mind as much as you can notice, and not further than that until further understanding comes through you that enables you to know more. The other way to understand "subtlety" of the mind is its characteristic and functiosn, both needing a different skill set to observe.
The question is either you notice it or you don’t. It is not about “something” you cannot notice *not* because you have not developed the perfect concentration required, as many believed. Not that concentration is not necessary but rather that is not the right reason, the right cause. Concentration does enhance the observation. More truer is that you can’t be aware of the mind correctly as yet as you do not have the skill. To put it another way, the view itself, which is “of the world”, is yet to be calibrated to observe the mind. You can say that the wrong view is trying to observe the mind.
It is a matter of viewing the mind correctly and that needs lots of right information. Once the right information is in place, noticing the mind can be as easy as observing the body. Many practitioners who teach gives the lame excuses that beginners must be taught to observe the body first since the mind is difficult to notice. In fact, by doing so, when they finally switch to observing the mind, they will use the same principle of the body to the mind!
It will be truer to say those who teaches do not have the skill set or have yet to find a way to convey an effective way to be aware of the mind. It need a certain right pointing or guiding for one to observe the mind. To finally able to notice the mind is a skill, a grace that each will be able to do so, once their views are corrected, like finally getting the right pair of glasses to see things clearly.
On another note, many a time I do observe there are those who managed to observe the mind, but it is not what they may have expected. Take, for instance, aversion. When they notice it, they wish it to end. You can apply that in the bodyscape, as what we usually do, each time when we are angry with something or someone, we just either move away, or even ignoring it. The worst is we shout back. But when it comes to the mind, you just can’t. Try shouting at it and you only get back more anger. Again, it is the misguided delusion of applying the body nature to the mind nature. Trying doing that to the mind and you can only over again to expect frustration as your result. Worst, you don’t even know the simple reason of your frustration is all due to a misguided perception, a wrong view which by a simple realisation can bring you back to peace, in the midst of having aversion as an object in your mind. Nothing to change in the mind. Its changes is *not done by you*.
That is why you can't crave for results when it comes to observing the mind. You can only notice it as correctly, as closer to reality, as you can. And not forgetting to be consistent. *The rest is not your job*. It's result will be taken over by Wisdom, or Right View. It will take place on its own accord once the observing mind, or awareness is no longer tainted by craving. Your job is only to keep *checking* on that, over and over again, probably for many thousand more times to come, patiently and correctly — and not by another folly of _expecting_ the awareness mind to be superbly free from craving. Simply know. Know what is *already happening* - not adding or substrating it. Nothing more than that. Know with clear comprehension. With clear understanding.
Right Understanding begins with right education. Without proper guidance and proper education of the nature of the mind, coming into meditation with wrong views only perpetuate more distorted views, within the mind. That is when people seek for more peace, more calmness or deeper states of experiences, not realising all are but just experiences of the mind, *not knowing the mind yet*, not matter how great the experiences are.
May I pray that you will find great understanding and realisation of the mind that you have engaged in since lifetimes immemorable thru Right Understanding. 🙏🏻