I'm taking care of him. [He's definitely not discussing the mental state of his best friend with the guy who attacked him.] He'll be as fine as he can be in a day or two.

[Which is baseline 'not really fine.' But both he and Sherlock are decent at compartmentalizing trauma. Sherlock much more-so than John, really.]

You need to worry about yourself and what you're going to do to make up for this. You're a broken watch, is that right? You're a watchmaker. Fix it.