Joy is emotion and therefore a subevent of Creaturehood, and its existence in creaturehood Body is a subevent of, and therefore is fully contained by, the containerless unity that is Universe. Just as joy can come from encountering and understanding the subjective and objective uniqueness, conditionality, and transience of the myriad singular glints that occur as Consciousness, stream, wind, and starlight interact to result in the perception of sun-dappled water, so can joy come from encountering and understanding the subjective and objective uniqueness, conditionality, and transience of the myriad singular glints of Joy Itself as they occur in Consciousness homed in Body contained in Universe.

And then there is Joy in the seeming containerlessness of the self-referential—Joy experienced without simultaneously perceiving the containedness of Joy. That class of experience is a bit less of a default for you now that you are a little more prepared to perceive and understand yourself and your life as a singular glint on sun-dappled water.