You see, in life, lots of people know what to do, but few people actually do what they know. Knowing is not enough! You must take action.
In the end, we are all alone, and we must face the consequences of our actions by ourselves.
Growth comes from challenging the status quo.
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
Exceed your customers' expectations. If you do, they'll come back over and over. Give them what they want — and a little more.