You check your hair in every reflection you pass. When’s the last time you checked your character?

Glancing at a reflection is automatic and costs nothing, which is why it happens twenty times a day. Nothing is wrong with that. The point is that you already have a habit of quick self-checks, and none of them are aimed at the part of you people actually remember. How you treat someone with nothing to offer you never gets a mirror.

Add one check to the day, at the same time each evening. Ask what you did that you would be fine having repeated back to you. Two minutes is enough, and it works the way the mirror does, by catching things early.