Maybe you could try drinking Calea Z tea. It's an herb that's believed to enhance the dreams people have at night. But more importantly, it's a tea that is so offensively bitter that it makes the inside of your mouth feel like it's being attacked - and that's coming from someone with a high tolerance for bitterness.

I forced myself to drink that eldritch brew every night for some weeks. By the end of it, the tea tasted... almost tolerable. But everything has tasted noticeably less bitter ever since drinking that stuff.