Generally speaking, the eight-character pure yin or pure yang is just a little flawed in character, maybe a little stubborn or timid, not necessarily.
There is no such thing as bad luck with anyone. Everyone's horoscope determines whether they are unlucky or not. If others can influence you, they won't influence you too much. If there is any influence, then the people around the chairman should all have successful careers, but many of them are just ordinary people and have never seen anything unusual.