Chastity and orgasm denial discussion

Hello everyone I see I’m a newcomer to this forum. The chastity lifestyle is also new territory for me. I’d appreciate some clarification on a few points from those with more experience than myself. Does male chastity aim to prevent erections entirely, or is it about punishing the erection itself by causing pain? This brings up my second question: if I switch to a smaller device (the CB6000s—I currently own the standard CB6000), will it completely halt my erections? My current setup allows me to get an erection of sorts, but it’s far from full and hurts quite a bit. Sometimes this pain stops me from doing things for M, like getting a foot massage on impulse, because I know it’ll trigger an erection and the resulting discomfort. Perhaps I’m misunderstanding the core concept altogether? Should I be suppressing thoughts about arousal unless M grants permission? Is that what it’s all about? Thank you, M’s lil B