Some people really need to learn to relax a little bit. My boss is younger than I am, and I am pretty sure he'll have a heart attack within the next year or two if he doesn't learn to relax. I understand that a lot of responsibilities come with being the boss, but being rude and sometimes just downright hateful is NOT the way to get the best out of your employees. Treating people poorly will just leave them with a bad taste in their mouth for you AND the job and will ultimately come back to bite you in the rear.