Allowing your blood glucose levels to reach dangerous lows may over time impair your ability to think clearly. In order to prevent this from happening to either yourself or a diabetic child, blood glucose levels should be monitored frequently. Your brain uses glucose for energy and nourishment, and depriving it of glucose can have a significant and long-lasting impact on it's ability to process information and respond.
Even if you feel like your diabetes has gotten better, it is important not to stop taking your medications unless a doctor tells you it is alright to do so. The medications are most likely what is keeping your diabetes symptoms under control, so without them, your glucose or insulin levels could get out of control.