Back to Creation

So I've kind of had this discussion with some friends and I'm a little confused as to what to think on this. If you have any help out there let me know. We have talked about the fall of man and how before it was perfect. Some suggested that we should attempt in our current fallen state to retract back to perfection as best as possible. That all sounds well and good but I'm really wondering how close to that picture we can really get since we are fallen. Are there certain things that we just cannot do anymore since we have fallen (obviously communication with God is different and perfections out of the picture)? So often I think of this perfection as doing everything right but I think it is a lot more than that. A lot of what needs to change is our mindset. We don't look at the world the same and even more so we don't look at God the same. I think this is what Romans 12:1-2 is talking about in the renewing of our mind. It's a whole different outlook on life. A lot of this stemmed from a friend who saw art in a library that was rather questionable. Before the fall a naked body was normal and now it is not. It is things like that and others that I'm not sure we go back to being like before the fall. It is hard to unknow that you are naked. I don't want to limit God in what he can do but I think there are consequences to sin and some may be unreversible.