Meaning and Purpose are Operationalized Consciousness.
Meaning is (shared) understanding or interpretation of the past.The negation of meaning is isolation or nihilism. Meaning is narrative, order, connectivity, construction of wholeness.
Purpose is narrative, constructed order for the future--plans, goals, mission, direction for present work.
Will or Agency is how we act on our consciousness or operationalize our consciousness now in the present.
Presentness is a powerful way of orienting ourselves to overcome stress, anxiety, guilt, daydreaming, and fear.