All questions about have a habit

What's a reading habit that you have ? Be it good or bad

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I have quite a few, but the one bothering me the most at the moment is a stutter in my thinking. I can talk normally and think just fine, but I can’t stop making my thoughts stutter. I think I picked it up from anime or from books.

Example:
“W-..What?”
“E-..Excuse me?”