Currently I'm the "surviving senior dev" for a very old crufty mission-critical legacy app, and I'm painfully aware how broken it is and the ways in which is breaks.

So sometimes I have to kindly remind myself that its current state isn't indicative of some damning (yet oddly egotistical) personal failure, where I "shoulda" rewritten everything from scratch by now.

On the plus side, the QA team is gradually learning to do more than manual browser tests...