Radiating is downstream of having. You cannot send out what you have not got, which makes this less a performance than a report on the tank.
Think of the person who walks into a tense room and the conversation loosens — not because they said anything clever, but because they were not braced. Their ease was real, so it spread.
Whatever you have today, some of it reaches other people whether or not you aim it. That is an argument for filling the tank, not for smiling harder.