Your room is not a good workplace.

Some reasons why your room isn't fit to be a good workplace (at least, not from my experience).

07:00 - Wake up, take a shower to freshen up, eat some breakfast.
08:00 - Turn on the PC, play some music.
09:00 - Start working.
12:00 - Stomach starts to rumble.
13:00 - Grab a bite, it starts to rain outside.
14:00 - Stuffed. Get back to work.
14:15 - Feel really stuffed (ate a bit too much for lunch), plus it's really raining hard outside.
14:30 - That bed starts to look more and more tempting with each passing minute...
14:45 - Zzzzzzzzzz...

I really need to move my working space out of my room...