My sister is really self obsessed. When we meet up we talk about her life and her problems for about 85‰ of the time. If I mention something about my life or something going on with me, she deigns a slight bit of interest before quickly going back to herself. The other day in relation to a selfish friend she has she said she was worried she was someone who only spoke about herself. She is someone who takes criticism VERY badly and easily argues with people so I just breezed over it. But maybe I should have taken it as an opportunity to tell her?