The saying that there are no rules in self-defense might distract us from what is effective and what is necessary. The subject is not simple but we'll have to simplify it and integrate it into the training. Ready how!
Just like we have former world champions, we have former black belts. A lot of times we hear people stating that they havecompletedtheir black belt in this and this martial art or system. The view of "completing" doesn't sit well in martial arts or self-defense, since the level needs to be demonstrated suddenly and unprepared.
Just as athletes winning the world championships. It is a one-time occasion unless he/she can stay at the head of the game and renew it. Once you stop maintaining the level, stop using the title, or add "former" in front of it😎.
Learning how to move, doesn't work well in blocks, it needs variability. Think of the time when we first learn how to stand up, then walk (or run😂) and we fall. Often. Then it's getting up again and off we go. This is very obvious to us, but then we take it to the self-defense training and we start training the movement piece by piece. Why? Because of the tradition of course. Well, if the tradition isn't helping you to learn, stop doing it and try something new. So try this!