Are you staying DRY?
One of my favorite design principles, when it comes to development, is Don't Repeat Yourself (DRY.) This one seems intuitive; a lot of you are likely doing it without realizing it. As the name implies, just don't repeat yourself. This applies equally well to code as it does to processes.
Thinking about copy and pasting code? What can you do to avoid duplication? It may require a little extra care, but in the long-run, your maintenance costs will reward you for it.
Are you manually performing some task, whether it's product releases or customer engagement? Automate that! Whatever you do, just stay DRY.