Self-defense from a knife that's very sad may be for you.
1.Need to keep my distance.
2.Need to resolve the conflict the easy way.
3.You need to go to karate lessons.
4.Looking into how dareit the enemy knife,we will see where he will strike.
The knife should leave abruptly and if no gun then immediately try to knock the knife or run away!
THE EASIEST WAY.....