have (one's) feet on the ground
To be and remain in a calm, stable, sensible, and pragmatic state or condition; to not be subject to extreme emotional reactions or affected by exceptional changes in one's situation. My father has always been a rock of level-headed judgment and advice. Even during our family's lowest points, he's always had his feet on the ground.
have (one's) feet on the ground
To be sensible and practical about one's situation.