My selective memory

I have a selective memory; no matter how I force myself to remember something I am sure I know, I know I will fail; I had never saved it in the first place. I don't remember the names of many of the people who work with me, who have been working with me for some time, I just don't care to remember their names. I can make an effort but why bother, if it mattered it would have stuck. Again, why would I? Unlike them, I live in the margin. I will never be part of their world and they will never enjoy the life on the margin.