The withdrawals are much lighter compared to what they will be in weeks, or months. Often the withdrawals can be over the next day! So if you have found yourself relapsing, and think that any control over your own actions has vanished overnight? You're wrong! But that's what many actually seem to believe.
Edit: I'd do almost anything to avoid going into full on withdrawal, so I guess I don't mean literal control, but feeling powerless. This reply does not consider benzo, I consider that en even much more dangerous drug for those seriously addicted to it.