Answer:
You turn me over after you have traveled far. What am I?
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
I am a desire to munch
I am the word that is always spelled correctly by everyone.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.