You can stare at a word so long it stops looking real. Overthinking does that to decisions.

Attention improves things up to a point and then starts taking them apart. Look at a familiar word long enough and the letters stop cohering; think about a decision long enough and all the options go strange and equally weighted, which feels like depth and is actually the same effect. The extra hours are not buying you information.

So give decisions a time limit rather than an amount of thinking. Twenty minutes, or a day for something larger, then choose and move. If you cannot tell the options apart after that, they are probably close enough that the choosing matters less than getting on with it.