Wiser minds tell us to, "Quiet your mind and try not to think when swinging the club." Or they tell you "It's best to have a single swing-thought for your entire round." But when you are playing, it is difficult to shut out all the things you think you need to do to execute a proper swing. Especially if you are doing so many things incorrectly.
And while thinking of something totally unrelated to golf might keep the golf swing demons at bay for a while, it might produce unexpected results if your "single thought" is a favorite meal and your full by the third hole.
Maybe the old golf axiom "Play it as it lies" should be re-imagined as "Lie when you play."
So, just tell yourself your swing is o.k. even if it's not, and just swing.