Very interesting then, I hope you find a helpful way forward if it's any kind of issue.
> what exactly did he mean? How did you do that?
From the way he explained it, he was referring to increasing my attention to subjective-executive activity. So like, "ah, I know what I'll try next time!" subjective organizations of things, subjective logic, frameworks, clever plans.
My main go-to is subjective-perceptive, IOW kind of waiting, watching what's coming, and more existentially surfing those waves as they come, more foresight- and in-the-moment-based perceptual activity.
So one example of an activity I do more often now is a sort of lessons-learned organization of things, looking back at what happened during a given activity or context, and planning for what I'd do differently next time.
IDK how that sounds since it's been both a huge change and also one that's mostly in my past, but in my case it was a real game-changer. However I'd really emphasize that this is just based on my own EEG results as processed through his experience in doing that kind of thing, and not general advice necessarily. For some people the steps I took myself can really make things much worse for sure, even though it sounds constructive generally speaking. For example if you're naturally a subjective-executive person, you run the risk of basically overusing that functionality and developing huge blind spots which could lead to problems.
BTW a long time ago I used to participate in a university-level biofeedback lab. The instruments were pretty simple but the results were IMO pretty great and reliably so, in my case anyway. Should be a pretty good project if you get into it. I've been wanting to start on my own gear/lab for that kind of thing, but just haven't got to it yet.