A.W. Tozer,
We Travel an Appointed Way, paraphrased by Joe Wood
"In a world like ours, we need to master the art and keep at the business of dismissing distractions."
I once foolishly bought a BT-99 Plus trap gun; fully adjustable everything. Spent 4 weeks adjusting and changing and shooting (poorly) while thinking about what I had just changed and what to change next

Saw the light, gave up, and sold the thing.
Heraclitus — 'No man ever steps in the same river twice, for it's not the same river and
he's not the same man' also applies to gun fitting.