You have to be conscious to every possible action that may reach you aside from pondering how you can refrain from an attack, which will take time. You need to fight back as a way of self-defense. Your fist is your tool in defending yourself that is why you should know how to make one. You can make a fist by flexing your knuckles and hit the sensitive body parts of the enemy, like the nose and chin (see where else you can strike here). Upon striking a part of the threat, this will give you time to run for escape.
If your fists won't work, use the power of your legs. Kick with much speed and power on your attacker's most private part. Do it as high and powerful as you can manage for a great shock and escape as fast as possible. Remember to concentrate your attention to your attacker at the same time be alert and aware of your surroundings.
Most of the time, enemies perform bear hugs to have a good hold that would let them dominate. Getting down, making an instant squat and shifting your hips sideward will help you get away from this grip. By doing so, you will be able to hit the most vulnerable body part of your opponent. Leave immediately after you struck him.
You have to think about the time you may devote in the fight protecting yourself. Timing is important in relation to application of your self-defense methods. What you have learned is not what self-defense is focused on, because understanding will come down the road. If you learned something scanning through this blog post on self-defense, perhaps you might plan to find out more on how to defend yourself at tacticalgearexpert.com.