In his book Jewish Renewal, Rabbi Michael Lerner says that anyone engaging the practice of Shabbat can expect a rough ride for a couple of years at least. This is because Sabbath involves pleasure, rest, freedom and slowness, none of which comes naturally to North Americans. Most of us are so sold on speed, so invested in productivity, so convinced that multitasking is the way of life that stopping for one whole day can feel at first like a kind of death.
As the adrenaline drains away, you can fear that your heart has stopped beating since you cannot hear your pulse pounding in your temples anymore. As you do no work, you can wonder if you are running a temperature since being sick is the only way that you ever get out of work. As time billows out in front of you, you can have a little panic attack at how much of it you are wasting since time is not only money but also the clock ticking on your life.