When I look into my life I see myself as a circle not a spot. Circles can blend in with their surroundings, they are usually transparent so what you see is what you get. Circles have room to bring others into its environment.
Spots on the other hand don't do much but cover up space and blot out things. They usually are more noticeable than any other object. Spots usually get all the attention and do not leave room for others to be part of them.