Every car has a blind spot, so you turn your head. Your opinions deserve the same head check.

A blind spot is not carelessness, it is geometry, and the answer is not to try harder but to add a movement. Nobody drives better by staring at the mirror; they turn their head, every time, as a habit that does not depend on how alert they feel. Your thinking has the same shape of problem and the same kind of fix.

So build the movement in. Before you commit to a strong opinion, ask one person who would disagree, or spend five minutes looking for the best case against it. It is not doubt but a routine check, and a routine runs even when you are sure.