Does anyone else suffer from this mental affliction?...

My mind takes a money making idea or model, then bounces back and forth between, "I am SURE that will be a big success!" and "That'll never work!"
Often it bounces between those 2 extremes at an alarming rate (several times per minute) -- most annoying/distressing. It's a battle between cheerleader + naysayer. Dreamer vs. "reality."

Anyone else have thoughts on this? (other than, "boy, you need help," etc.)

-- TW