the average person thinks about
twelve thousand thoughts per day. A deeper thinker puts forth
fifty thousand thoughts daily."
Dr. Deepak Chopra once quoted a study (...) in which the researchers
concluded that the average person thinks approximately 65,000 thoughts
per day. They also went on to conclude that of these 65,000, about 95%
are exactly the same thoughts that [passed] through the minds of
people the day before.
... Source:
Google Answers: Thoughts per day