hourly rate concept

roughly speaking:  you annual salary / 2080 hours = your hourly rate  (time/money profitable)

Professor Marty said: if it hasn't changed your behavior you haven't learned it
                                   in order to do it you need to at least apply 1 or 2 of what I've said.

By thinking in terms of your hourly rate, you can invest your time more wisely into profitable opportunities, avoid unprofitable ones.
Reading source: The story