It's interesting to begin to understand things about yourself, your actions, your motivations and about what is worthwhile, wholesome, beneficial, and what is not. Some types of meditation can help greatly with these understandings and some would say there should be no "non meditational" part of your day. Every waking moment has the potential to be a mindful moment of being aware of what you are doing and why you are doing it and this can facilitate further understanding of yourself, your actions, your motivations.
I'm not sure that one "practices" emptiness. One hopes to understand emptiness and understanding could come from mindfulness both inside and outside of formal meditation.
But as a disclaimer, in the tradition I practice, the concept is anatta, not emptiness, so there might be subtle differences with emptiness of which I am not familiar.