Practice, Professional Programmers

Practice:
Robert Martin - The Clean Coder A Code of Conduct for Professional Programmers

"All professionals practice their art by engaging in skill-sharpening exercises.
Musicians rehearse scales. Football players run through tires. Doctors practice
sutures and surgical techniques. Lawyers practice arguments. Soldiers rehearse
missions. When performance matters, professionals practice.”

"In one way or another, all professionals practice. They do this because they
care about doing the best job they possibly can. What’s more, they practice on
their own time because they realize that it is their responsibility—and not their
employer’s—to keep their skills sharp. Practicing is what you do when you aren’t
getting paid. You do it so that you will be paid, and paid well."