Finally I tried something. I was going to run just a tiny bit longer every single day. I started at 2 mi or so. And at the mid point of the run, I'd pick a spot ahead of me I'd shoot for tomorrow. That's it. Not time limit, speed challenge. Just get to that next bench. That next tree. And see what happens.
Eventually I was past 5 mi. Then 6. Then 7. At 7 I was waking up eager to do these runs. At 8 I finally felt like I understood why people love long distance running. At 11 mi, I was in love. I ended up hurting myself and dreading the time it took to recuperate. But I was back at it, and going strong before Covid.
Now in Covid land, I've paused my running schedule. I'm just too freaked out. I live a little too boxed in here in Chicago. Near the lake with running trails, but soooo many runners. Someone ran by me and coughed yesterday on a walk I took and it's still burning in my brain :) So I'm avoiding those paths as much as I can.
I can't wait to get my running shoes back on.
Big lesson I got from all this is so many things can be unlocked just pushing yourself an almost unnoticeable amount each day. Focusing on the schedule and the tiny increment rather than "progress" or "success.