Agree with xmh, also wanted to add that you need to at least, on some level, be able to understnad what needs people hve. That doesn't mean you need complete empathy, but if a student is struggling, the lower the grade level, the less likely they might feel comfortable going to you thesmelves, so you need to seek them out.
I don't just mean struggling ith grades, either. Say a student just lost a member of the family. It'll be hard for anyone, but a college student might be more able to talk about it than a high school student. You can always ask another teacher or someone to to approach that person if you can't bring yourself to, of course. But you have to be willing to help someone who is having trouble understanding the subject and at least considerte.
No matter where you teach, you don't have to be all chatty in a course - I remember recommending a college history professor this way: "All he does is lecture, but all Nolan Ryan does is pitch." In other words, there was no time for questions, no chitchat, but he was so incredible, so good with details, and could make it so interesting and understandable (Russian History was his subject) that it didn't matter - he was as great at his craft as the Hall of Fame pitcher at his.
hadrian_f's questiosn are good, too, and I would add to them, "Can you explain some facet of the subject to someone in such a way that they will understand it." You don't have to be a Picasso painting a picture of your subject like that Russian History prof - but you have to be able to make it understandable enough that the students will say, "I get it."