i did another sport. i hurt my shoulder. it quit being fun. i literally set my stuff down mid-practice, packed, never came back. this does not lessen the fun it once was. but be attuned to the signals of the universe.
also, maybe it's because i was a sprinter/hurdler who also did 800 and XC but you vs. me to the fence post is primal -- the opposite of fake. but the distances you are doing may become no fun anymore. do another distance. do hurdles. do a field event. challenge yourself.
or maybe it's time to transition out. one of the dangers of being an endurance athlete, to me, is ceasing to listen to the universe and just enduring....everything.....