You Kill me sista!
Now regarding a layoff...I think things can go either way. Sometimes you will come back to the gym and set a PR straight out. Other times you need to REALLY back things down and build things back from scratch. Mental toughness and 'Tude are great but sometimes our physiology dictates how frisky we get to be. It sounds like you are low in both Frisky Factor (FF) and Ass-Kicking-Potential (AKP). Not the end of the world, just have to acknowledge, and plan the next campaign.
If you are over thinking things it may be time to really shift gears, lighten the weight, shoot some video of your technique and scrutinize that. Shift to DB work or one handed work for a while. Gutting through something can be great but there are SOOO many ways to tackle things...just keep it fun.
Now specific to the over thinking ive seen Coach Burgner get an Over Thinker into a good position and then bellow "MOVE!!!" again, and again and again...cuing good form but just trying to get the person to FEEL the movement and not intellectualize it.
And if all this half-baked philosophy does nothing to help at least you are un-clean…but among friends.
"Survival will be neither to the strongest of the species, nor to the most intelligent, but to those most adaptable to change."