If what we got was an exotic experience, then the memory of that experience becomes a possession you hold on. Your fear that this memory might fade, so you keep re-imagining it many times to maintain its vividness. If its an image a person is holding of you (which we call deep admiration, love etc.), then we keep trying to maintain this image through our actions and even in our memory (by preoccupation) and are fearful about just letting it be without controlling.
What is the way of out this fear? Why do things keep changing in nature? Why is it so difficult to be detached and see with clarity? What do we really want, that we try to obtain in so many ways, even in our everyday actions?