Focus in on your co-workers face, their voice, and the content of what you two are talking about. Inside at this point of concentration should be in the background enough to get the job done. If not, then you need to be in a therapist office twice per week, so that inside can calm down. Sleep aides are recommended preferably not over the counter medicating, but then again I know how important sleep is. Exercise is helpful, eating correctly...Then sometimes none of these things work you just gotta whether the storms! I know I been there done that and can write all about it.