I've had to start over so many times that I have lost a lot of my memories, both tangible and in my thoughts.
Occasionally someone who remembers me finds me on Facebook and send me an email. For a few, I sit on the email for weeks or months, not sure what to write back. Others, I respond to right away. I can't tell you why I do this; but it's quirky. One friend, from high school, wrote me a very nice email about 2 months ago. It's still in my inbox, but I haven't responded.
As I move past an event in my life; it's treated like the pages of a book folding up on top of themselves. In my head, the memory gets sucked into a black hole. I have a terrible time recalling so many things now, and now is when I really want to know. I protected myself to my own detriment.