Tired....No.. Exhausted.. and Frustrated

I don't know if CAD is what is driving me crazy or if it is the fact that the drawings are hand drawn and therefore not perfect.... The third floor plan is to the correct scale yet the CAD plan is becoming bigger and more off from the drawing as I do each floor.  You would think well.... okay each floor is bigger... well no.. they are not.. After doing the site analysis, I realized how symmetrical each floor was.  They're basically the same and the building DOES NOT get larger...UGH... so my drawing should all line up!! and since it is not I am  I'm stressed and upset.... I need a vacation :( or maybe I should just go to bed. Good day.