I'm one of those people who, once they have a goal, has some trouble re-setting it. Tunnel vision? One-track minded? Inflexible? I am getting where I'm going, come hell or high water; sometimes I can't even see that there is a ferry I could take, rather than forcing my way on foot through the waves and getting soaked over top of my waders.
A sensible person would examine electrical plugs and sockets and see if there is a visible sign clearly indicating — and quickly — which side goes into which side of the socket. It's probably simple and obvious, if I'd but take the time for a closer look. One side is wider than the other, and maybe it's marked on the rubber. And probably the wide side always goes on the right.
It's all in the details, and in slowing down and paying attention to them.