Argue for your limitations and sure enough they're yours.
Akin to self-fulfilling prophecies, what Richard Bach, one of my all-time favorite authors (he wrote Illusions: The Adventures of a Reluctant Messiah and Jonathan Livingston Seagull and One and The Bridge Across Forever: A True Love Story and Running from Safety: An Adventure of the Spiritas well as several others) is telling us in this quote is that if you think or talk about what you believe you are not able to do, then you will surely not be able to do it.
Henry Ford has another way of expressing the same thought: Whether you believe you can do a thing or not, you are right. And Napoleon Hill states it in yet a slightly different way: There are no limitations to the mind except those we acknowledge.
So remember this the next time you don't believe in yourself. Practice using your mind for the purpose of refusing to believe in your limitations, as opposed to believing in them. If your cats wail (as mine used to) when you sing in the shower, clearly you are not meant to be the next Celine Dion or Fergie. If you are around five feet tall, about 1m52, clearly you are not going to be playing in the NBA. But those are not the kind of limitations I'm talking about. Believe in your abilities and do as Thoreau recommends: go confidently in the direction of your dreams. Live the life you have imagined.
Photo Credit: Francesco Marino