On the one hand there is the generally-attributed-to Henry Ford quote: Whether you think you can or that you cannot, you are right. On the other hand, there's being realistic. I do believe that self-definition is very important and can be limiting. However, I don't want to set such high expectations for myself that I become disappointed and frustrated. Anybody have any words of wisdom on how to balance these? Some thoughts are forming while I'm typing this, but I'm interested in hearing what you all have to say.