Feel in the absence of an object, person, States, some, only when it disappears. When present not get the attention becomes a habit, it becomes that are part of you, but when she disappeared, you start to go into a panic, withdrawal, like a drug addict who has not taken a dose at the right time (exaggerating now).
Never take into account that we have with us, we are not interested, we are passive, as when I hold the entire earth in one hand, take subsequently we are faced walls, which brings us with feet on the ground, and proves to us that we are the people that we will die and sometimes we are, and that everything passes us, because later regret.
Always we notice it when it disappears, just like when we are cold or when we have health problems, only then we realize how good we feel when we are healthy, then for the period when do not feel well after we got back and disappeared during the melancholy with the thought as well when we are healthy, because it is a part of our lives.
Not going to think, enjoy, things, people when they are near us, but only after we've lost them, we think with regret how good it was when I was all of the little finger. But we are people, we understand that when it's too late and when nothing remains to be done to rectify.