I obsess. I obsessed about running when I ran; my knees are too torn up and arthritic now. I went from being overweight, out of shape and a non runner on New Year's day of 2013 to running a half marathon in 2:08 in mid October of that year, weighing about 60 pounds less. I usually didn't run every day. i would run 6-10 miles 3 or 4 times a week. If I didn't run 2 days in a row, I nearly always ran ~10 the 3rd day. i am not sure I can offer much help. Right now I obsess over paddling and my diet.

Running alone in the dark is clearly placing yourself in danger, especially if you have a consistent route. My hypomanic danger behaviors tend to be more one off actions

I had an ED and maybe still do to some degree. I gained back all the weight I lost in 2013 but then lost it again from last September through March of this year. I have been maintaining the loss since then but have lost another 10 pounds below goal for 70 total. My BMI is still above 23, so I haven't gone too far. In both of my big losses and several smaller ones, I stared out practically starving myself and losing weight very quickly. In 2013, I did that for the entire loss. Once I finished losing, I would go right back into binge behavior and gain it all back. This time I was talked into eating healthier and slowing down the loss in early December. I have been tracking calories consumed and expended pretty obsessively. The good news is that works; I haven't gained any weight back. The bad news is that it is another obsession. I am committed to stop losing about where I am now. I am at a healthy weigh and exercise enough that I am in good shape.

I am not sure I have any good answers for you. As far as ED goes, obsessing over my calories burned and consumed is better than the binge and starve cycles. It is still an obsession, but I am not sure we can ever not have them. I think the best we can do is find healthy ones.