I had this dilemma where I was still working at my old job, while currently at my new job, and I had an evening where I had 3 things scheduled at once. I was sitting in a large ornate theater pondering what I was going to do and which job to give priority to. The one obligation for the old job only required a few minute of time for a film screening, but it was in New York, so precluded being able to do anything else.
So then I walked out onto Lincoln Center Plaza, and ran into a friend and former co-worker. She was running/training. She's about 20 years older than me, so I was impressed that she could run faster than me.