“Trying to define yourself is like trying to bite your own teeth.”

Simplified Meaning:

When you try to figure out exactly who you are, it's as tricky as trying to bite your own teeth. It's something that's really hard to do because you can't look at yourself objectively. Just like it's impossible to physically bite your own teeth, it's tough to step outside of yourself and see your own personality and thoughts clearly. For example, think about how you choose your clothes each day. You might pick what you like without really knowing why those clothes represent you. Someone else might see your style and make judgments about your personality based on what you wear, but their view can be very different from how you see yourself. Following this idea, it's often more useful to live your life and let your actions show who you are. Instead of spending all your time wondering about your identity, focus on doing things you enjoy and care about. This way, you naturally express who you are through your actions, and people will understand you better by watching what you do rather than hearing what you think of yourself.