It is important to have the right perspective when contemplating the answer to this question. If you look at the current world leaders they are in fact Guides who have a Spirit inside of them. They are guides for millions of people with a particular set of interests. For the enlightened however they are not fitting Guides for the Paths we wish to choose.
In the same extent you have what are often called invisible forces that function the same way, they make suggestions about what we should and should not do. This often comes in the form of guiding and suggestive thoughts and ideas. The more knowledge we have the more we become our own Guides so in effect we find a "true" Guide when we reach the state of knowledge that allows us to direct ourselves in a way that will equal balance.
see Ancestors, Oversoul, Familiars, Eidolons, Ghosts