"Down" Time

Although the thought does creep in at times that one is wasting time with matters of healing and resting and the like; nevertheless, even a small degree of reflection leads to the understanding that the healing process is not a waste of time. On the contrary, the small amount of time that the person thinks is being wasted results in a profit of much time in the future, time that can be utilized by the person in avodas Hashem "in all his ways" - in keeping with the directive of our Sages, as explained at length in Toras HaChassidus - with joy and gladness of heart.

(Lubavitcher Rebbe)