Burn out your Jr. year is normal so don't think about it as if there is something wrong with you or running or your coach/team.
What I did to re-inject some enthusiasm for the sport was a couple of things: Trophy Runs - find some not too local 5ks, don't tell your teammates, grab some non running friends and make a weekend of it, tempo it, win by a minute or so, hear the lamentations of the women, take in the local scene as a non runner would; Adventure runs - my teammates and I would run out deep into a nearby national forest and go spelunking, do a Hash, explore nearby cities, towns, trails, get off the beaten path. Nothing intense just combining a sense of adventure with something you're good at.
You'll surprise yourself with how fun this can be. Running can be more than a job, it can be a utilitarian way to get out and explore life like only a small percentage of the general population can.