Be Strong in the Lord
Elder M. Russell Ballard, Quorum of the Twelve Apostles:
"One of the ways Satan lessens your effectiveness and weakens your spiritual strength is by encouraging you to spend large blocks of your time doing things that matter very little. I speak of such things as sitting for hours on end watching television or videos, playing video games night in and night out, surfing the Internet, or devoting huge blocks of time to sports, games, or other recreational activities.
Don’t misunderstand me. These activities are not wrong in and of themselves (unless, of course, you are watching salacious programs or seeking out pornographic images on the Internet). Games, sports, recreational activities, and even television can be relaxing and rejuvenating, especially in times when you are under stress or heavily scheduled. You need activities that help you to unwind and rest your minds. It is healthy to go onto the soccer field or the basketball court and participate in vigorous physical activity.
But I speak of letting things get out of balance. It is not watching television, but watching television hour after hour, night after night. Does not that qualify as idling away your time? What will you say to the Lord when He asks what you have done with the precious gift of life and time? Surely you will not feel comfortable telling Him that you were able to pass the 100,000-point level in a challenging video game.
One devastating effect of idling away our time is that it deflects us from focusing on the things that matter most. Too many people are willing to sit back and let life just happen to them. It takes time to develop the attributes that will help you to be a well-balanced person."