The way you are riding the horse and the connection you have with an animal indicates your life as it is at the moment. If you are riding the horse smoothly and the animal listens to you that is the way you are going through life. If the horse is not listening to you or do not move at all, you are managing your life in a bad way. The changes must be done immediately.
Dream dictionary: horseback riding dream meanings
Being inclined to lavishness, wastefulness.
…If a sick person dreams of galloping on a horse through forests, his condition may get worse. If the patient gallops through a city, she/he will heal son. Horseback riding indicates success and prosperity. Falling from a horse points out about losses. If the horse is saddled but nobody rides it, it signifies a womens meeting. Selling a horse warns about property loss. Punishing a horse, false accusations. Seeing it shoeing, we must prepare for a trip. Giving them their proper food, wealth. If the horse has a very long tail, we can count on our friends. If the horse is white it portends good news. Black horse symbolizes problems. Bay horse indicates dignities. Sorrel horse foretells about difficulties. Gray horse indicates about the obstacles….
…To eat grapes in your dream, you will be hardened with many cares | but if you only see them hanging in profuseness among the leaves, you will soon attain to eminent positions and will be able to impart happiness to others. For a young woman, this dream is one of bright promise. She will have her most ardent wish gratified. Dreaming of riding on horseback and passing musca-dine bushes and gathering and eating some of its fruit, denotes profitable employment and the realization of great desires. If there arises in your mind a question of the poisonous quality of the fruit you are eating, there will come doubts and fears of success, but they will gradually cease to worry you….