"It is quite obvious that we do not all inhabit the same time." - Ezra Pound

For me, there are two key ways of temporal consciousness. Both are essential to self-awareness and our perceptions, but the varying degree that we engage in one or the other drives our desires, personalities, and lives.

The first principal form of temporal consciousness is the Present. It is utterly unaware of Past and Future's bearings on Its Own State. It is our source of experience and growth. It is where lightness and heaviness are first felt.  The second principal form is reflection of the Past. Whether it be prior moments, conversations, feelings, images, or montages, this is how we are to make sense of the accumulation of Present time. There is, naturally, a third category of temporal consciousness - the Future. However, since the Future cannot entail more than anticipatory feelings rather than actual experiences, it is not an essential State of Existence for everyone. 
As I previously stated, the varying degrees in which we experience these different temporal consciousnesses directly impact the way we experience life. These degrees vary within individuals, as well as across cultures and eras. For example, one likely implication of modernity is that people live lives of much more saturated moments in condensed measurements of time. The speed that technology has induced in our minds is infectious to our outlook. The modern mind--with all its compacted experiences and thoughts in even more compacted moments--retains less time to dwell on the Past. It has less capacity to reflect, and hence less capacity to grasp significance of the details and the hidden meanings. 

Occasionally in this modern world, you will encounter a rare mind who clings to items, images, memories, moments of the Past. This person entrenches these Past belongings with significance and recognizes their untapped power. This person often must separate himself or herself from Present Mindedness and the company of others in order to appreciate the weight of the Past. For these types, experiences may be fewer but are densely valued. For this person, treading in deep water trumps treading on thin ice. The heaviness of the depths is sought over ephemeral lightness.