The dream interpretation of the direction left, can be derived by its traditional connotation in waking life. The left is opposite to the right and its dream interpretation is such. The left usually means the opposite of the right (as in the correct). Used as such, dream imagery of the left, either in direction or otherwise, means the wrong direction or wrong thing.
Sometimes in dreams, objects and people appear to be arranged on your left. If this strikes you as being unusual, it means this placement is deliberate and has meaning. The traditional and correct direction points to the right. However your dream may be telling you to try something different, by enticing you to try the left.