When faced with an opponent in a self-defense situation, you should express emotions. You may want to express your real emotions or you may want to express a false emption in an effort to confuse the opponent. The basic emotions you should practice expressing are confidence, friendly, solemn, unconcerned contempt, shock, fear, and anger.
Upon warning or indication of an attack, step back with your strong side away from the attacker. Raise your open hands to face level and tell the person to stop. Act passive but be prepared to block an attack and then to counterattack with authority. Your goal is to incapacitate the attacker as soon as possible.
Do not assume a fighting stance. It gives your attacker a warning of what techniques you may use to defend yourself and it puts them on guard.
Keeping your guard up is always important. Even when punching, kicking, blocking, or moving, you must keep your guard up. You must keep everything in your favor as much as possible. Never leave an opening for your opponent to attack. You never leave an opening. When an effective guard, there will be fewer attacks to block since the opponent prefers to attack when there is a chance of hitting the target.