Use tools for other purposes than they are intended for. For example operating on large number of files can be a challenge is C#. Tools like Ant, NAnt, Rake are designed for this purpose.
Automate, automate, automate.
When coding, always prefer the keyboard over the mouse.
In Windows, type the first part of the previous command and then hit F8. The shell will perform a backwards search through previous commands that match the first part of what you’ve just typed.
Concentrate on essence, not ceremony.
The more time you spend on the tool is less time you can spend on the problem.