A daily or weekly reflection journal can capture personal judgments.
There may be people’s actions that you find unpleasant, ways of doing things that are not as you would do them, work environments in which you would not want to remain.
Your judgments, your prejudices and biases, even the ways you discern and discrimate, will help you learn about yourself, your values and your limits.
Journals allow you to speak your mind!
For more, see Mark Cooper, Reflection: Getting Learning Out of Serving, Florida International University