training and fighting
The few times that I have gotten into and actual scrape on the street, I immediately responded with a judo hip throw that I learned in 1965. It was one of the first martial arts techniques I ever learned. It's simple and effective. It was just a response -- I did it without even thinking.
I've also studied karate, tai chi chuan, and aikido since 1965. I think that the wide range of techniques that we learn in practice help us to become more solid and strong in many ways. But on the street, when push comes to shove, a few basic, proven techniques are usually sufficient.