Once you have responded to and submitted your self reflection you can return and review your answers.
To do this navigate to 'My Reviews' in your sidebar. From here click 'Self Reflection'.
You'll then see the following view:
These are all of your past responses to self reflections that are part of a current reviews cycle.
To view self reflection responses that are part of past review cycles click 'Past Reflections' as highlighted below:
Here, if you have any past reflections, you'll find any past reflection responses.