"To be playful is not to be trivial or frivolous, or to act as though nothing of consequence will happen. On the contrary, when we are playful with each other we relate as free persons, and the relationship is open to surprise; everything that happens is of consequence. It is, in fact, seriousness that closes itself to consequence, for seriousness is a dread of the unpredictable outcome of open possibility. To be serious is to press for a specified conclusion. To be playful is to allow for possibility whatever the cost to oneself."
Basically, be open to surprises and serendipity. There's lots of room for variation even in that routine. But you can also add things to the routine. Socialization is a major one; it's the 20% of "work" that brings in 80% of the wonderful things in life.