You must be constantly attached to spiritual delight. Even when you enjoy transient pleasures, such as on Shabbos and festivals, you should be attached to the spiritual pleasure in that thing – which is its vitality – and not to the object’s physicality. For when you are bound to spiritual pleasure, G‑d will remember you; for G‑d is also bound to a spiritual pleasure that is beyond our comprehension. However, when you relate to the physicality of a thing, such as the food itself, then you are far from G‑d. Ibid, part 2, p. 19b