I admit that one of the big draws of getting in software was not having to deal with people.  But that's just not how life works.  If you want to grow, learn, and advance in your career, you absolutely must interact with people, and interact with them well. For me, one of my big life mistakes is not recognizing other people's perspectives and thereby giving them the respect they deserve.

The advice here in Deadtech's post is rather basic, but so very important:

Lifting the Curse of Knowledge