If we were to awake and immediately think, “It’s the weekend,” we’d know that our work is finished for the week and that we could rest. But if we were really, truly relaxed, it would mean waking up without immediately having to decide what day it was, and understanding that I was up to us to choose to work or play as we pleased. The point is not whether or not the thought is realistic in terms of choices we have to make but how our subconsciousness is organized around the thoughts of what we have to do.
Some of us worry about working hard enough because our need to achieve is all that justifies allowing ourselves to take a vacation. That alone is difficult to bear. But another subset of us compulsive achievers works hard enough to prove that we are worthwhile human beings. The downside to this driven path is that our imagination tells us that we would have to go crazy, have a nervous breakdown, or get seriously ill in order to have any rest. This is burden enough to tire us so that we should go back to sleep.
If you need proof that you are entitled to rest, you may never feel okay about taking it easy.