For one minute sketch a picture of your soul. Don't think about it, just see what happens. Later you can compare it to what happens in the novel. If you haven't been in the habit of doing that, try it several times in the next few days and see what happens. Record your reactions and that of others.
Some people are very complex and deep.
Others are shallow and self- centered. Decide what kind of scale you will use and what the values represent. Alternatively, you could simply rate them in order from simple to complex. Support your decisions by explaining or using examples from the novel.