Are myths really unrealistic?

Have you ever heard of a myth stating that you shouldn't eat beans after nine because they give you bad dreams? Like other people I didn't believe the stupid myth, but I did after the night I couldn't wake myself up from falling. I was around the age of thirteen or fourteen and my mom cooked dinner really late. She gave us beans knowing that we didn't like beans at all, so one night she gave me a bowl full of beans. Since I didn't like beans it took me along time to eat them. By the time I was done it was around ten o'clock pm. I went to bed really tired and still could taste the after taste of the disgusting beans. Once I was fully knocked out I had this dream that I was in this beautiful forest. Everything was so colorful and there were beautiful flowers and animals. The fruits were shiny and delicious, and I remembered seeing myself skipping around full of joy. About ten feet away from me I saw the most beautiful water fall ever. I skipped to it and decided to let myself fall into the water. Slowly, I was falling gracefully, but then I kept falling. All of a sudden everything around me went pitch black. I was still falling and then I thought maybe if I wake myself up maybe it would all be over, but the scary part was that I couldn't wake myself up. When I tried waking myself up it felt like something was holding me down.
I had to wake myself up before I hit the ground. I heard this myth that you could die in your sleep from falling and, so my goal was to wake up. I kept forcing myself to wake up, but I couldn't and then after numerous of tries I finally woke up panicking. I was breathing really hard and sweating. Two days later I had the dream again only this time I was already laying on the ground. The most wired part of this dream was that I saw myself dead and I saw the real me standing over my own dead body. You would think I tried waking myself up, but I didn't. Instead I wanted to see how I looked dead, and I wanted to see what was going to happen next. The scene changed again and this time I was on top of a huge rock just like how it was on lion king except it was really dark and it was only my dead body and me. I can't remember much, but what I do remember is I started crying over my body and then I woke up crying.
That was the most creepy thing I ever experienced. When I told my friend in elementary about my dream, he told me how he believed his grandma died from the same dream. He said it started off as her having a dream when she was falling, but she woke herself up before she fell to the ground. When she woke up she told him about the story of her falling. The next day she died and till this day he believe that she died in her sleep from falling...