I find getting up earlier helps.
It really extends the day, but its a drag if you go out till past midnight as you get tired easily
(usually take a power nap as a result)
The way I look at it there is nothing wrong with watching tv or being on the internet it is about what you do and how long.
If you are online on a chat site like one of past BF living an altnerative life online, that is unhealthy.