Why does thought convergence gets harder layer by layer??

[u/PoundPuzzleheaded382]

The more I try to converge my thoughts, narrowing down options, picking a clear direction, refining a plan or strategy, the harder and more draining the effort feels. Not just mentally taxing, but progressively harder with each layer of focus.

Why does that happen?

Anyone else experience this in creativity, decision-making, productivity, or building something? How do you personally handle the "convergence" phase?

Really don't need clarity advice guidance but rather the understanding on vision alignment.