【如坐针毡】〖rú zuò zhn zhn〗[sit on pins and needles; as if sitting on a spiked rug; be in an extremely uncomfortable position; be kept on the anxious seat]

如履薄冰诚惶恐，

坐愁行叹愁难宁。

针针丛棘处境恶，

毡上拖毛涩滞行。