“Kill your darlings.” – William Faulkner.
There is an editor inside you.
He doesn’t always give you answers, but he often, as you reread, highlights something. It’s the sentence that keeps catching your eye – the one you keep questioning. It’s the point you’re just not sure about.
Of course, your inner editor is passive aggressive, so he won’t say anything. He’ll just keep highlighting it, every time you read.
Until you delete it.
If you question it once, play with it. If you question it twice, delete it. I’ve never regretted it.