I've been going back and tweeking old trading setups I used to use and I came across an idea that sucked so bad, it was a perfect setup to take the opposite trade on. That got me thinking, how did most of you come up with your edges? Did you come up with an idea on your own or out of a book and then just keep working it till it started showing results? Did you happen to find something on accident? Were you trained by a mentor? Or some other way?