Don't know where to start - but this is actually everything a spiritual seeker must know: How to raise ones frequency of consciousness (or in other words) minimize the radius of the self-refernce circuit. So what do I exactly mean by that?
Given the assumptiom that everything is one / you are everything/ there is only that, the only way to interact with so-called reality is by yourself/ through yourself/ with yourself. So you are seer/ seeing / seen, subject/ process/ object, receiver/ medium/ information, these triads are closed circuits.
When identification happens, the triad apparently splits apart. Let's try to find a metaphora for it even though it's just a fairy tale of course:
Imagine "you" are sitting in a train and watch the train tracks. Your look is statically focused into nothing (particular), you watch the train tracks passing by forever and ever. In this state you are completely one with the scene. There is no mind, no body. Just "train tracks passing by" is happening. You are not really in the train, you actually are the train, the process of watching and the train tracks itself. Nothing complicated here. Then, one day, a thought arises like: "What am I (actually made of)? What does a single rail actually look like?" And then your look clings to a single rail. You turn your eyes to see how it is falling behind, and then it's out of your sight again. But this was not a fullfilling answer to your question, since you couldn't see all the details of the rail and the moment you could examine its properties, it disappeared again. So your look clings to the next rail and so on and so on. Every rail you examine first lets you hope and makes you excited to get the answer to your question, but then you mourn after it the next second, leaving you with more questions than before. Your eyes are in constant motion, from one rail to another. Relentlessly, your restless soul longs for the answer, since you apparently lost the selfknowledge. A subtle memory of the natural relaxed state of "train tracks passing by" rests in the depth of your being, but you project this state into the future. You can only imagine to rest like this after finding the answer to your question. You cling to the rails, but they are sooo fleeting. Then you suddenly recognize that there is something which is always present during your desperate search for the answer. Even though the rails appear and disappear and your eyes constantly move, there something subtle ("within your awarenes" - not really ) which is still the whole time. You try all the methods to concentrate on that again, which is constantly here, not fleeting. In the end, they all have the same goal: raising the frequency of your eyes moving back to the "statically focused into nothing (particular)" - state. Minimizing the distance between the old rail (the past) and the present one, so that your eyes can rest instead of constantly shifting from one place to another. Means: raising the frequency of your consciuosness, minimizing the radius of the self-reference circuit.
Here are some examples:
Neti neti: Realizing you are neither this trail, nor that one - makes your look relax into the natural state since the rails become less and less important
Self inquriy: By zooming out and turning inward, you realize that the rails don't define your being, your eyes stop focusing on something far out there which is rushing by, but focus closer and closer to yourself - the focuspoint transitioning distance becomes shorter and shorter
Letting go/doing nothing: Your eyes just relax, you stop energetically clinging to the rails
Breathing meditation/body awareness: Instead of being imersed in the looking, you relax into what is - not trying to solve the riddle, but let your body find its natural energetc equilibrium
Being present: You stop clinging to past rails - everytime you remember clinging to a past rail you naturally shift back to the present one All these techniques shorten the distance of switching your focus from one rail to another, and try to bring it back into the natural relaxed state, the energetc equilibirum, which is the state of the least resistance. The shorter the distance between two focus points (the smaller the radius of the self-reference circuit), the higher the frequency of consciousness (frequency of being in the present moment). "Enlighenment" is the natural state of least resistance, which was there in the beginning, when you didn't identify with the rails. It's the closed circuit of the triad. Of course, there actually is only enlightenment, because you were/are present all the time, only your eyes were not as relaxed as they could be. So being completely present kind of equals an infinite frequency of consciousness - and this is perfect nothingness/silence etc.
What do I mean by that? Imagine a beat every time you focus back on the present - At the beginning of your spiritual journey it occours quite seldom, slowly raising its frquency. Then it slowly turns from single beats into a clear tone - moving up the ladder through all the octaves. Since then you still have the feeling of being in a journey of raising your frequency - until it becomes such a high pitch that you can't hear it anymore - complete silence, stillness. I could write more about what I mean by minimizing the radius of the self-reference circuit, giving other metaphoras like a planet (object) flying around a star (subject) until both collapse into each other when the rotation frequency hits its maximum. But I think this text can be enough for you to realign again with what your highest goal is. Remember - there is only the present moment to focus back on the NOW. Don't attach to this moment, since it is fleeting. Don't stay in the present moment (which is impossible since now it is not the present moment anymore), stay in the NOW. Realign your focus over and over again, every time you recognize that clinging to a moment happens. Your frequency of consciousness will raise, which soon will be recognizable. Then you will realize that there is nobody and no situation that could ever disturb you in your meditation. That you don't meditate by closing eyes and sitting with straight back. You then will meditate while eating and shitting. You can meditate RIGHT NOW, just come back here and now again. What is real/true NOW? Who are YOU? Don't project the answer into the future, don't lose yourself in thoughts (rails), just come back to what already is the case - eternally NOW.