A rock, although seemingly hard and not easily changed, over time can be transformed by the continuous movements of the sea waves. The Earth, although unimaginably large in size compared to the human population, can also be devastated by its indiscriminate use. The weather, although a natural phenomenon, can be changed by human caused factors that no one could have imagined in the past. The universe, although huge beyond our comprehension, does change over time too.
Closer to home, our perception too changes over time when new information comes through to us. Our relationships can take a turn for the worse or better, no matter how much we want it to stay the same. Our body too is slowly in the process of aging, notwithstanding our expectations of eternal youth. Birth gives rise to life with death waiting in tow. Illnesses come, illnesses go. What does all of that tell us? What is the one similarity which exists in everything no matter what form it takes? Be it animate or inanimate, solid or gaseous, material or immaterial, or even the mind?
It is the nature of change. Change is inevitable. It is the fundamental principle of everything that takes on existence. There is no unchanged or static phenomenon. When anything can affect another, how can change be avoidable? Nothing can tell what is coming its way. Even knowing about it does not stop change from occurring. It confirms that at any given moment, every happening is new, is fresh, and not lasting, only to be replaced by a new “newness” again. The static nature is but only a concept, not a reality. But more importantly, change is a resultant. What causes change? Why is it that whatever arises has to be subject to change, to the fleeting nature of impermanence?
It has to do with how happenings are conditioning each other. Take the weather as an example. The weather does not arise on its own accord but is conditioned by many factors. The weather, upon arising, can in turn condition the temperature and many more other happenings. The temperature, in turn, can condition many other happenings too, from decomposition to making new happenings come to be. Each happening is a product of conditioning. No happening (which is a kind of happening of its own) can also condition new happenings to take effect. For example, if this article was not written, then probably such an understanding of the effects of conditionings will never arise in your mind.
Happenings are effects but they are also causes for more happenings. Any one happening can cause another happening to occur. In togetherness of happenings, another happening is caused. Where there is no happening, that not arising will cause another happening to arise. For that, impermanence is the core nature of the world. And its effect is change, either for the better, or for the worse.
Happenings can be tangible or intangible. It can also be seen or unseen. As long as it takes existence, happening takes effect.
Happening is not personal as it is a result of the conditioning of other happenings. It is a persistent and continual play of nature, unknowingly making new happenings along the way. As such, happenings never have the ability to attack, nor defend, nor even "for" or "to" make something. Even though happenings are without a “self”, devoid of any entity in it, yet other new happenings can spring forth from them due to conditionings.
Your thought is not personal. It arises from other happenings that conditioned it. Your intention is not personal as there must be something already in existence that drove it. Attachment, stress, or even personality, are all impersonal but wrongly perceived as personal. Even this wrong perception must surely be caused by other happenings since it by itself is already an existential happening.
So in the end, any happening, including life itself, is but just another passing show of conditioning, of impermanency, of “impersonalness”, itself unsatisfactory by nature, only to be realized instead of being held on to. Wrongly perceived, attachment, sorrow, lamentation, grief and suffering can only be its effect, as conditionings continue to play their processes impersonally.
And so, a piece of good advice for you, awareness begins the journey of waking up to the true nature of this world, thus ending the unnecessary conflict caused by moving against the nature of conditioning. Only then, freedom can be found, in the midst of conditioning.