Remember that no relationship is a total waste of time. You can always learn something about yourself.

Insecurity is a waste of time.

Nothing is a waste of time if you use the experience wisely.

The single biggest misconception about games is that they're an escapist waste of time.

There's always going to be somebody who takes a dislike to you and you can't waste time worrying about it.

Memory and creativity are essential to education, but if you teach memory incorrectly, it is a total waste of time, and it will inhibit learning.