i hate to say this but.... you end up with a lot more time if you cut back on email, forums and chat.

i mean, even if you have 12 hours for work and commuting, and another 7 for sleeping, you still have 5 for eating, cleaning and doing some art work.  let's say you give artwork just 2 hours a day.  2 hours a day of focused attention is actually a lot.  8 hours of unfocused attention isn't enough.   so if you want to get more done, take it from someone who hasn't finished an image in ages: it's distractions that hold everything up and focus that finishes them.