I feel you on the burnout thing. I hope you're able to enjoy the game. This is going to be a bit stream of consciousness, apologies in advance.

Do you belong to a chatty FC? One with an active TS server? That helped me a lot.

Log on, but spend less time on the game. Use the other time you played to take a walk, catch a movie, play cards against humanity with friends, that sort of thing.

Find a greenleaf and help them with quests or dungeons or whatever for a half hour or so (it's random stuff you haven't done in a while and may be a good change of pace)

Avoid doing grindy (hunts/atma) things for longer than an hour.