[she nods slowly, thinking about it. how her own dreams felt lost in the underground from time to time - it happened.]

The obvious and most difficult solution is to talk about it, to get some of it out of festering in your mind unchecked. But if that's not possible, then some things do work - physical activity to tire yourself out, sleeping in a different location like your couch sometimes works, leaving music on or the the like as a sort of subconscious distraction. Using any sort of chemical substance for sleep is a last resort, not advised until the condition cannot be solved by any other means because of the risk of dependency. That includes drinking.