Borrow things like they cost you double, because trust does.

The object is the cheap part of borrowing. When a drill or a jacket comes back late, scuffed or not at all, what you have really spent is somebody’s willingness to say yes, and that is much harder to replace than anything you could buy. People rarely tell you when that account has run dry. They simply stop lending.

Return things earlier than agreed and in better shape than you got them, which usually means cleaning something or replacing a battery. Say when you will bring it back and put it in your phone. Treat the smallest loans the same way, because those are the ones people quietly count.