Mowing a straight line only works if you look at the far end of the yard, not your feet.

Aim comes from the horizon, not from the ground under you. When your eyes stay on the immediate step, every small wobble becomes a correction, and the corrections accumulate into a curve you never chose. Attention to the distant point is what quietly keeps the near ones in order.

Name the far end of your own yard in one plain sentence about where you want to be in a year. Then check your week against that rather than against yesterday. You may find that some of what you have been correcting for is not on the line at all.