Students complain to me that the subject is too broad. It's your responsibility to narrow the focus for a successful, college-level thesis. However, here is a strategy: Look for qualities in the characters that make freedom stronger.
Here are some qualities I see in the characters:
One. The Third Eye, also known as metacognition and self-awareneness, the kind that allows us to think about the way we think and about the way we behave.
Two. Self-control, being able to delay instant gratification of our passions so that we can think out a problem or analyze our behavior. As a result, we improve our position rather than surrender to self-destruction and compulsion.
Three. Humility, the kind that allows us to learn from our mistakes and become stronger and wiser.
Four. We focus on strategies for overcoming our problems rather than wallowing in the drama of anger and self-pity.
Not having freedom, we have the negation of the above qualities.