I'll be honest, I'm quite confused.
The first line seems very out of place. It does not correlate with the other four.
The first two lines have no flow with either the remaining three lines or even themselves. The second line in particular has the use of a semicolon that seems unneeded and further disrupts the flow even within that line. Is there a significance to the disjunction that you create throughout the work?
The last three lines are very cohesive though. They have both form and meaning. The way you word the third line forces the reader to imply a noun used before (memories), which conserves the flow and helps with conciseness.
Then, there's the title. I simply don't understand it. It implies that your piece is about 'words that are like mirrors', which relates to your first line, but not with the rest.
As I am interpreting it like so:
Some stories are like reflections (perhaps without value/meaning? Not sure how to interpret 'surface'.
Thoughts and life-experience create/remind us of bad memories.
But, without our memories, we question our sense of self.
What were you trying to achieve with the style that you used? And what was it that you were trying to convey? Perhaps, I'm simply overlooking some key things or misinterpreting?