Many of Freud's theories seem either extreme or brilliant, but I can't make up my mind about this one. I don't think that people walk around like zombies letting their subconscious decide how they should act out. I do believe that people repress memories or feelings about those memories which have some bearing on a person's behavior, although it is not the main aspect of why a person acts or behaves the way they do.
I do consent to the idea of people's inner feelings or conflicts that have been repressed, coming out in dreams, but Freud also believes that a "slip of the tongue" is not just an accident, but the true inner feelings coming out. There are a lot of times I'll call someone the wrong name, just because I was hanging out with a different person earlier that day and simply got used to saying their name, not because I wished I was still with that person or something. This entire theory has left me riding the fence. I suppose it did the same for many others, which is why there are not a lot of true Freudians left, but instead Neo-Freudians who have revised a lot of the theory's features.