Carl Jung talks about dreams like that, they are very special. I have had similar dreams from time to time and they do leave you feeling very good.
I personally believe they are from a spiritual source and are meant to give you comfort.
I was feeling really depressed one day wondering why I was even trying to keep it together when I went for a walk and I saw a beautiful double bow rainbow. I sure took that as a sign to believe that things would work out and they did.