Unexpected Praise

The boss sent a general 'pull your socks up' email to the team at work today. Was wondering whether I was one of the ones slacking off or something, so sent an email asking if I was - which I hardly ever do, and it wasn't important enough to have a mini-meeting about, what the heck would I ever say in those things, even with my performance appraisals it is just nodding my head and signing on the dotted line, so god help me if conflict ever happened - and the boss replied with the following -

You should not doubt yourself. I was just reviewing the monthly stats. You are "Mega Man". No, it was definitely not directed - in any way - at you.

There are a few in the department that feel its more a social club than work place and their results have been dropping off. This will definitely be addressed in the one on ones this month. But as I said before, definitely not with you. You are one of my best workers and a pleasure to have in the department.

Have been wondering since I got that praise, what type of person I would be if I let go of at least SOME of my doubts. An arrogant prick, most probably LOL.