Having written riddles about emotions, Millie went on to write riddles about other abstract nouns. Read her beautiful riddle below and take a guess about what she is describing in the comments box below.
I hang on to the tip of your mind, replaying over and over
I am impossible to let go of
I am the essence of the hours, days, weeks, years of your life that you have lived
I can not be changed or modified, no matter how much you wish for it
You are told not to dwell on me, but it is hard not to
WHAT AM I?