IDE Agility (Know Your Shortcuts)
Although you can perform refactors manually, most development environments already automate a lot of them. The five atomic refactors are widely supported, and some of the higher-level refactors are as well. Using an IDE, if we trust it, allows for very safe and efficient automated refactors, thus avoiding manual mistakes.
We should invest some time into becoming proficient with our IDE refactors and refactoring shortcuts. This enables us to experiment more with refactoring since we can quickly do, and undo, refactors. It also allows us to chain several refactors to move code from A to Z in a safe and efficient way.