Realization from Dreaming

Have you ever ever realized something about yourself that you never knew before, becuase of what happened in a dream?

In my dreams, I often see these giant, black dogs of undeterminable breed. Some are only as big as Scottish Terriers, while others are big as horses and could be rode on- one of them could walk on it’s hind legs like a person. The thing about these dogs is that they’re really freindly, and don’t hurt me, and I’m not scared of them at all.
I looked up black dogs in Wikipedia and found out about ‘Grim Hounds’, these shapeshifting black dogs that gaurd cemetaries to keep the living out and the dead in. Basically, it’s a symbol of death. I realised that I had heard of them before when I first read ‘Harry Potter and the Prisoner of Azkaban’; I had just forgotten until now.
That’s when I realised that I wasn’t afraid of death.

Anyone have a similar premonition?