lay of the land

i'm walking on familiar territory, and yet i act as if i've stepped into the unknown. it shouldn't be like this. i've known the lay of the land for a long time - for too long, if you ask me, and better that i would probably need. and i don't know why i keep walking the same roads i walked before, why i keep drinking water in the same plagued fountains, or picking up the same rotten fruits to eat.