Priority stayed a singular word for about five hundred years before anyone thought to pluralise it. The plural is where the trouble started.
A list where everything is starred contains no information. If six things are top priority, the one that gets done is whichever was loudest on Monday morning.
Rank yours honestly, one through six, and accept that four through six will be neglected. That's not failure — that's what ranking means. The next level is mostly built from things you agreed to do badly.