You should actually do this every year.  Even more often is recommended by Kim Kommando (the computer guru) if you spend a lot of time on the computer.
I was shocked to see how well this works, and how far off mine was!
To re-calibrate your mouse, click and hold on the Y below, then drag the Y toward the g.
If it doesn’t work immediately, you might want to clean your mouse, as the calibration is off.
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You dumb ass. You’ll believe anything
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I’M SURE YOU WILL ALSO RECOMMEND THIS TO ALL YOUR FRIENDS ONCE YOU SEE HOW MUCH SMOOTHER AND BETTER THE MOUSE WORKS AFTER BEING CALIBRATED!