I left a job I loved where I was highly regarded and liked for a new job in the same sector which was a promotion but a much longer commute (70ish mile round trip as opposed to under 10). I've been in the new job about 7 months and am doing well but not loving it and I really dislike some aspects of it. I left my old place on really good terms.
I like some aspects of the job but not all, the people are nice but the commute is killing me. it takes two hours at least out of day and leaves me really tired, also the thought of doing it in the winter isn't pretty.
A job has come up at my old employer which would really suit my skill set and experience but I'm worried about looking like a sad failure who's coming crawling back if I apply for it. Any views?