To break or not to break
It is easy to make a mistake when beading. The pattern may be complicated. The beads are often tiny. Time goes by and suddenly you notice it: there is a bead in the wrong place. Sometimes it is clear what you need to do and you begin to rip out the work. Try not to think about the time spent. Focus on how patient you've become. Patience is a good thing, right? You may decide to go back because the beads won't hang together as they need to if you don't remove that one darn bead.
But sometimes there is another choice. You can decide that mistake is a 'spirit bead.' Native American beadweavers add an errant bead on purpose to identify their work as human. We are not perfect. We make mistakes. The work is still beautiful. Life goes on.
Redo or accept.