It's all in the setup. Strong hands help, but tools help too.
I use a plastic garbage can as my workbench so rotor and cassette don't get damaged.
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And I use cheap plastic C clamps to assist in centering the bead - this picture doesn't tell the whole story, but you should get the idea.
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Finally, the amount of air left in the tube can be tricky. Too little and pinches are too easy, too much and you can't get the tire on. I suppose I will get better at it over time, but there is certainly a degree of satisfaction in doing it yourself. If I could find a reasonably priced set of wheels - I would have a winter set and a summer set and simply swap wheels for conditions. The search continues.
I swapped out tires (on rims) on my Volvo Wagon yesterday - It's December here and it's time. It's the latest wheel swap I've ever done - we usually get winter tire season starting the end of October here.