The essence of a successful business is really quite simple. It is your ability to offer a product or service that people will pay for at a price sufficiently above your costs, ideally three or four or five times your cost, thereby giving you a profit that enables you to buy and to offer more products and services.
Brian TracyNo matter how many personal productivity techniques you master, there will always be more to do than you can ever accomplish in the time you have available to you, no matter how much it is.
Brian Tracy