Is clarity momentary?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner (Q): Acharya Ji, it sometimes seems that I have clarity, but the actions taken in that clarity are proven wrong later on. Is clarity momentary? How to deal with this?

Acharya Prashant (AP): Yes it is possible for time to again cloud the clear sky.