In a combat or self-defense situation, getting your opponent off balance can give you an advantage. Here are some techniques, but remember that you should only use them when legal and necessary: 1. **Kick Sweep**: Target the time one of your opponent's legs is on the ground and quickly kick at the ankle or calf to effectively knock your opponent off balance. 2. **Push and Pull Combination**: Use push and pull movements to get your opponent off balance. You can push your opponent's upper body first, then quickly pull his arm or shoulder to break his balance. 3. **Turn**: Use your own body rotation or sideways to avoid your opponent's attack while gently bumping your opponent with your shoulder or hips to make him lose balance. 4. **Head and Shoulder Strike**: Target your opponent's upper body with a push, especially if he is on one foot or standing unsteadily, to easily knock him off balance. These techniques require some practice and are effective in different situations. When learning any self-defense technique, it is best to do it under professional guidance to avoid hurting yourself or others.