The uniqueness of each moment is a phenomenon unto itself. It just doesn’t seem this way because one doesn’t truly experience the moment, they just experience the noise between their ears.
Just be aware of what arise from the silence and how it just as quickly returns to the silence. Don’t label it as anything, just watch it arise and dissipate. Don’t attach to it, just watch, whatever arises now it’s there and then it sinks into the incoming moment. The same thing with a sensation, watch it arise, be with it and watch how it returns from whence it came. Imagine you are on the beach, just sitting watching the waves arising from the silence, breaking on the shore and then it’s gone, over and over. Occasionally a seagull will appear or people will pass by. The lifeguards blowing their whistles sitting at their stations, watching what arises and returns to the silence. A helicopter comes into view and disappears. These occurrences are stored in our subconscious and are given labels, breaking wave, seagull, people, helicopter, lifeguard and so on, but they all arise from the silence of the uniqueness known as the moment. Everything arises from here.
These are what becomes our memories; the moment when something arises will never happen again. Because we label everything it seems as though history repeats itself, but it doesn’t really, it only seems that way because of the attachment and label given to something; once a moment passes it’s gone forever. Why our behaviors are repeated over and over is because of attachment, but the uniqueness of the moment is a phenomenon unto itself. It just doesn’t seem this way because one doesn’t truly experience the moment, they just experience the noise of what’s going on between their ears.