I noted here and in the other thread you specifically bring up the body swap scenarios. I'm not a fan of borrowed skills or body swaps which EW seems to use a lot of. With their reduced number of skills it still takes some time to get in a rhythm and figure out the best way to play them. As I dislike them so much I automatically fail the first try so I can go easy mode right off the bat to get the scenarios over with as quickly as I can. Even on easy I fail on some of the tries (for the get good folks out there it ain't going to happen as I'm in the stage of life where slow reflexes only get slower and eye sight only gets worse). I do like FFXIV for the main story line but would prefer to play myself for scenarios rather than be stuck with gimmicks that don't really advance the story being told. As to your situation all I can suggest is to not get bogged down repeating the scenarios endlessly. I've found when I fail once or twice it is best to relax and not go back to them for a day or two after which I will frequently be able to complete them.

In regards to your comment about a potential meeting with Zenos. I don't want to ruin the plot but you might be pleasantly surprised about how things go.