First is just the simple fact that work (and work travel) has been taking over my life lately. A couple of my work projects are legitimately high stakes right now (like, people's jobs on the line if I can't make some things work out) so I've been under a lot of pressure. Those things really do have to be my A-#1 priority right now. Unfortunately, the rest of my work hasn't conveniently shrunk to allow me to spend a greater portion of my day on the high stakes stuff, so I've had a lot of very long days. Working a 6-8 hour day in the office and then coming home to work *another* 4-6 hour day in the late afternoon/evening has, sadly, become a thing, as has working on the weekend (sometimes in airports and on planes).
I suspect it's probably not unrelated, but I've also started to feel really burnt out on running. No one is super excited about every run and workout all the time (I don't think??), but usually my bad days are limited to feeling super tired and unmotivated when I get home, forcing myself to put on my shoes and get out the door, and almost always feeling better. Lately it's been so much worse--lots of days when I'll think about the fact that I have a run on my schedule and want to burst into tears. Or I feel tired and sour about going on a run and then it never gets any better. Sometimes getting ready for a track workout and feeling like I'm about to have a panic attack, except it doesn't go away once I've gotten started.