Not to sound too Dr. Phil all of a sudden, but I think the key to survival is to embrace one's past and to not run away from it. And to come to some sort of relationship with it or understanding of it.
Just to be clear, if, like Pat Robertson, you somehow missed all the evidence, all the research, the depth and breadth of all the knowledge garnered about HIV and AIDS over the past three decades, you cannot get HIV if you share towels.
I don't feel I'm very present in each moment. I feel like every moment I'm either thinking about something that's coming down the road or something that's been in the past.