1822) Proverbs 22:34-35 tells us what sort of friendships are not healthy. It says that spending a lot of time with someone who is angry is dangerous. Why? Because we adopt their ill manner quicker than their good ones.
 
Angry people are not happy ones. They only see the injustice of things in their lives and make it a point to tell everyone about them. These kinds of people bring poison to all around them.

Perhaps it would be good to spend less time with angry people.