Wasting time is spending plenty of time doing something halfheartedly and ends up with nothing at all, but resentment and self pity.
Have you ever been in my situation?
I work but my mind is not on my work. It is on 'idle' mode. I, therefore, minimize my work, turn the video player on, and relax, but in a few minutes my mind sends alert signals that deadline is coming. I can relax no more and I can work no longer.
This is what I realize.
I should do everything wholeheartedly. If I have decided to work, I should work until the work is done. If the work is never ending, I should plan my work so that I will not be over-worked or become a workaholic. If I think I need to rest, I will rest. I will not think about any works that await me and bug me. This way there is no time wasted on being confused.
Take home points.