I have always worked fast, and people tend to treat that as a personality trait rather than a practice. I would rather explain it, because it is the second thing.
Back in design school we ran competitions. A logo would be dropped in a folder, we would be told where the folder was, and then the file was erased. Go find it. Look at it. Rebuild it. Upload your version when you are done.
I did well at those, and not because I had a better eye than the people beside me. It was because I did not touch the mouse.
Watch how most people work. They go up to the top menu. They move the cursor. They click. They travel down a list. A flyout opens, and inside it a second flyout, and somewhere in there they finally find the command. That is four or five seconds, several dozen times an hour, every hour, for a career.
I built my own key commands instead. I still do, in Illustrator, mapped to my own hands rather than to whatever was decided in nineteen ninety-something. The difference is not marginal. I am not more talented than the person beside me. I am simply not spending my day walking a cursor across a screen.
Here is why it matters, and it is not about output. When the gap between having an idea and seeing it is small enough, you will try the fifth idea. And the ninth. The person fighting their tools stops at two, because trying is expensive for them, and their best work ends up being whatever they happened to think of first.
That is what speed buys, as far as I can tell. Not more work. Just room to be wrong a few more times, cheaply, until you land on something right. It is available to anyone willing to learn their tools properly.