Standing on a building requires us to rise one level above the building itself.
Working in a kitchen is to use its ingredients, vessels and appliances to cook up something. Working on a kitchen is to improve the kitchen’s setup – to service the stove, label the spices and reorganize the shelves.
Working in a job is to perform its day-to-day tasks. Working on a job is to improve the job – to define new standards, train employees and increase efficiency.
Working in a business is to run the business itself. Working on a business is to take a step back and make the business run better.
We are often too busy working in things. How about devoting a fifth of your time to work on them instead?