Certainty is not having a state of consciousness without doubt. Certainty is that you recognize your doubt, you admit your doubt and you know your doubt is implanted by the dark side and you therefore still STRIVE for certainty. It's all about recognizing, admitting and knowing there is a dark force pumping this doubt into your mind.
It's about doubting your doubt as opposed to having certainty in your doubt.
Think about that for a few minutes.