We spend so much time dealing with tools that tend to be extremely pedantic and detail-focused. We're constantly thinking about all of the stuff that's gone wrong with our applications previously, what new things could go wrong with them now, and how we avoid that. For building robust software, or robust IT infrastructure deployments, that's a good thing, but I personally find it somewhat difficult to turn this mindset off at the end of the day.
I've been in the industry for 20 years now and this stuff still gets to me sometimes. The last year or two I've been trying to establish a consistent meditation practice just to help get out of my head a little bit and distance myself from some of the stress and cynicism, though I'm not sure how much it's actually helped yet.