Since Windows XP and especially since Vista/7, I spent a lot of my time with Windows re-learning how to do the same things. They kept moving controls, or lengthening the process to get to the same controls via onioneering. I switched to Linux, and it was about the same learning process as a new version of Windows. Then I upgraded to a new version of the distro I was using...and it was mostly the same, had a couple extra features and came with a different default icon set.

Result: The time I used to spend re-learning how to do things I already knew how to do was now spent learning how to do new things. Instead of treading water, I'm making headway.