For years, I have used templates to improve my productivity. I create a template for any task I find myself doing repeatedly. So instead of reinventing the wheel every time, I do it once, save it as a template, and then reuse it.
For example, before speaking engagements, I always have a conference call with the event sponsor. Initially, I found myself asking the same questions. Sometimes, I would forget to ask something important, so I decided to create a reusable template in Evernote. (You can see it here.)