honestly i used to be addicted to both ritalin and concerta. went well over the "max dose" of both many times. but i remember one day, i just... lost the urge to abuse either of them. not because i felt like i was going to die/overdose, i literally looked at the pill bottle and was like "eugh no". it was long past diminishing returns, i genuinely felt sick with zero pleasure at that point, but it actually managed to override my addiction (in a way that wasn't moralfagging). idk if this is a common thing sorry