Best psychiatrist personality types

What type of personality do the happiest/most fulfilled psychiatrists tend to have? Does working as a psychiatrist have a negative impact on one's own mental health? I'd like to get some feedback on this and get an idea of what type of personality types tend to do best in the field. I'm also curious whether outpatient practice is as taxing (or maybe more taxing) than inpatient practice and in what ways.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums