Deposition Day tomorrow

Tomorrow morning I have to give a deposition in a lawsuit my wife and I filed in regard to an auto accident 2.5 years ago. We tried to negotiate with the insurance company but they never made a reasonable offer to settle the case considering the medical bills and other costs associated with the accident. That was a big disappointment. Now we have lawyers involved and more money. I'm not sure what to expect tomorrow and I'm trying to make sure I have all the facts straight from something that happened a relatively long time ago. Since the deposition is given under oath, I want to be sure I don't contradict anything I said in the statement I already submitted.