For those caught in a day that they'd rather not be in, remember this.
It may be true that you could be spending time better elsewhere, but you're stuck at the day job in order to pay the bills. It doesn't have to be "wasted time" though. You could just as easily direct your thoughts to something you deem more "productive", while still doing your day job well. The only thing you need is:
Get your mind moving in the right direction.