My mind it's always racing and thinking about a million things. it has for years. its not hard to concentrate, but im just curious as to why it does?

Possibe mania: Racing thought are often associated with an episode of mania. If you also have trouble sleeping, do impulsive things, like shopping sprees or casual sex with strangers, show presurred speech, and have flight of ideas, you could have a bipolar disorder. This disorder can be managed with medications and you should see a psychiatrist. Anxiety and depression disorders can also cause racing thoughts. Y.