If I am traveling at the speed of light, I see a beam of light travelling in the same direction not moving. In other words, at the speed of light my time stops. But I would see another beam of light passing in the opposite direction travelling at the speed that is double the speed of light (?), or I would have to think that my time is flowing in the negative direction. Which is my time? Do I have two different times, one for each beam of light?