Hey! I don't sleep much either haha. So filming in the day is always the best condition. In terms of video quality, it's the best for vlog type videos, (the sit and talk kind). But if you want to shoot at night, Lots of light is required. Probably you can try three point lighting for the best effect. The first will be the keylight, illuminating your face at an angle. Then a reflector or a weaker light on the other side of your face to soften the shadows, this is the fill light. Important thing is, the fill light shouldn't be very strong, you want to keep a little bit of the shadow to maintain a 3 dimensional situation. The third light should illuminate the background! And there you go! You could also light up a few candles in you room along with these lighting to create a nice atmosphere
Hope that helped![DOUBLEPOST=1410208542,1410208405][/DOUBLEPOST]
I forgot to mention the light types haha! You can use CFL bulbs, you can even make studio lights at home! There are plenty of videos on youtube about it! But the important thing is how you use them!