Answer:
I am an English word with 3 consecutive double letters.
I belong to you but others use me more often than you do. What am I?
I start new then become old. Start clean but be one dirty. I usually start big then become little.
What loses its head in the morning but gets it back at night?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down but should not be forgotten.
When is it bad luck to see a black cat?