All we can do is to make the best of our friends, love and cherish what is good in them, and keep out of the way what is bad.
I hate those TV shows where characters talk about one thing, such as their patient on the operation table (let's say they're a doctor), then you realize they're actually talking about actually talking about themselves. The patient's open-heart surgery is nothing compared to their own messed-up heart or whatever. It's selfish. And means they're not concentrating, which is medical negligence.