I agree it's good to hear your sister's perspective. I also think it's good to try and minimize the strain your illness puts on others. Like you, I'm also someone who tends to keep it to myself as much as possible; whether that's the best way to go about it is up for debate. That said, I still think it's hurtful and short-sighted to call anyone selfish for being bipolar, no matter how well-intentioned. It just makes you feel that much worse the next time you're in an episode, which is unfair; it sucks quite enough without feeling guilty about it. I hope your sister is open to that perspective as much as you are open to hers.