Think of it for a moment. Combat happens on the mental level for around 70%.
This number seems rather arbitrary, but I think I catch your meaning. Yes, a very huge part of fighting is about the mentality of those in the situation.
I was just sick of crap on my mind distracting me during sparring,
Training in the Japanese concepts of Isshin, mushin, and zanshin will eliminate such distraction.
of course in an actual self-defense situation that stuff will be gone once adrenaline kicks in.
This depends on your level of training. The truth is that in a self-defense situation everyone will hesitate and a million thoughts will race at once (why is he doing this? what's going on? should I fight back? Should i just run? Should I call the police? Will I go to jail? ect. With training this delay between thought and action will decrease.
But after a certain point you dont feel that much adrenaline anymore because you got used to it and that is where regular crap starts to occupy your brain again.
In self-defense? NO. In training, maybe, but that is indicative of lazy training and needs to be addressed by being more mindful of the situation and focusing on the results you want.
The storm idea is just metaphoric of course, it is supposed to provide the person with certain attitudes, just packed into a natural picture "storms" we can intuitively understand, such as flexibility, relaxation, letting your opponent run into void, killing their balance, overwhelming and breath-taking actions and so on.
I'm not really sure what you are talking about. How are storms a concept? I mean I can see storms as a metaphor for anger or danger, but what do they have to do with flexibility or relaxation?
Originally I was tired of complicated moves in Chinese MA without flexibility. In the end I found it stupid your brain fills up with hundreds of specialized techniques that you could only effectively utilize after ages of practicing in situations as close to real combat as possible.
Martial arts should not be focused on the techniques themselves but rather the principles and startegies that are expressed through techniques.
I figured if there was a style based on something everyone can intuitively understand, learn and train it should be about just as effective, but less ... "artificial".
Martial arts are not intuitive. It is training because you actively work to do something that you could not do before. If it was intuitive people would do it without effort, and martial arts requires effort. Some people may be more apt to some martial arts than others but that is usually due to body composition and the personality of the practitioner. And I have no idea what you mean by artificial.