你的晚安是我最好的安眠药
[nĭ de wăn ān shì wŏ zuì hăo de ān mián yào]
'Your good night wishes are the best sleeping pills for me' captures how comforting words from someone (possibly a loved one) have become a soothing and stabilizing force before sleep. It indicates deep affection or reliance on another's reassurance.