Tips for dealing with difficult colleagues

But when does normal friction become real stress? When does a colleague who may be annoying from time to time become a real burden?
We begin to find colleagues difficult when traits become patterns of behavior. If a colleague criticizes your presentation once, that’s fine, but if he complains every time you present it, it becomes unpleasant. Once these behavioral patterns become entrenched – someone who is rude, someone who is hostile, someone who is aggressive – it creates a lasting negative mood within the team.