The Unconscious Mind and Defence Mechanisms
Your mind works like an iceberg - what you're aware of is just the tip floating above water. Freud divided the mind into three levels: the conscious (what you're thinking right now), the preconscious (memories you can easily recall), and the unconscious (the hidden depths that actually drive most of your behaviour).
The unconscious mind isn't logical like your conscious thoughts. Instead, it's packed with unresolved conflicts and emotional drives that you can't control directly. These hidden forces influence your actions and show up in dreams, slips of the tongue, and seemingly irrational behaviours.
When conflicts arise between different parts of your personality, your mind protects itself using ego defence mechanisms. These include repression (burying painful memories), projection (blaming others for your own feelings), displacement (taking anger out on the wrong person), and regression (acting younger than your age).
Remember: Defence mechanisms aren't necessarily bad - they help you cope with stress, but overusing them can lead to problems.