Difficult in what way? I'm just curious.

For better and worse I work in a field that has a lot of egos and some really big ones. Many with the biggest egos are woefully unqualified and are horrible people (as I ranted in the work rant thread). Power and control issues run rampant among this group and toxic managers destroy careers, projects and entire sections. I would consider myself cocky, but you kind of have to be in this field. People at my work will walk all over you unless you show fangs every so often.