It is the loose ends with which men hang themselves. — Zelda Fitzgerald
One loose end has the potential to be a problem; multiple loose ends have the potential to tangle themselves into a world of their own — one that is difficult to penetrate.
That truth is balanced by the knowledge that once you weave in and trim that one loose end, you have set yourself on a course from which you cannot return, and which may, or may not, be the best path forward.