If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

You can have all the talent in the world, but if you don’t work hard, it won’t matter.

The only way to improve is to play against the best.

最好的交易者是那些能够控制自己情绪的人。