The time the sun rises and sets will not change, apart from the few minutes a day it changes naturally. It's just a device to make everybody get up, go to bed, and do everything else an hour earlier or later.
You only have to change your clocks and go along with this nonsense if you are required to fit in with everyone else (and I don't see why farmers need their cows and chickens to do that).
As I am self-employed and work at home, I can work the hours that suit me. I get up when I wake, or as soon after that as I feel like it, I go to bed when I feel like it, and I eat when I feel hungry.
However, I've only had major problems with the time change when more than one person decided to change the clocks, or when someone changed them in the wrong direction, either of which can make you, or the other person, two hours out of step with the rest of the world.