A bit over a year ago I was thinking of learning magic to make my visualisation ability better, thinking it didn't matter whether or not any actual extra hidden physics was involved, if it got the result then that would be good. I did not actually end up putting the work in to learning magic though. Zen wrote that the magic someone did to improve his visualisation ability worked by helping him disassociate from his senses. And thinking back, that actually fits with my memories. What harmed my mind's eye ability was taking a drug that prevented my mind from disassociating from my senses, so I studied more efficiently. The ability I used to have of imagining multiple moves ahead in a board game was about dissociating from what I was seeing. The post-drug feeling of snapping back to my senses is similar to how it felt when I had the drug in my system. This is not legal or medical advice I am giving here kids, but maybe discuss with your doctor not doing drugs, kids.