Suitcase Principle

Suitcase Principle does not tell you what to do. It tells you what not to forget while you do it.

Applied daily, it changes less than you hope and more than you expect. That is how principles work — unglamorous, cumulative, and visible only in photographs taken years apart.

It is worth keeping in your pocket not because it is always right, but because it is always available. A tool you carry beats a perfect tool you left at home.

Watch two shopkeepers in the same lane during a lean month. One cuts quality, the other cuts margin. In a year, one has customers and the other has stock.

Money is a good clerk and a terrible master; the arrangement is entirely up to us. No ceremony needed. Begin with the very next decision.