I think one of the biggest things that has helped me to "get more done" over the years has been taking things one step at a time.
I think really productive people are not necessarily the "fastest" workers. Rather, they are just the best at focusing at one tiny aspect of the big problem at a time.
Many times, we rush into problems that are very complicated and multi-faceted in nature.
Because of this, we drown and waste tons of time trying to do multiple things at once or, even worse, take on too big of a challenge at once.
What is refreshing to think about is that every project starts with one step.
While it does not always feel this way, there is always a first step every successful project took at one point. I think it is easy to forget that when you see some complex system up and running.
Finding that first, second, etc. step can be hard. But recognizing that they are all there is definitely important.