There once was a girl with a curl
Right in the middle of her for'ed
And when she was good, she was very good,
But when she was bad, she was hor'id.
Now, this girl was seven or so years old, and she had a bike, which still had training wheels on it. She rather liked her training wheels, and didn't think herself quite ready to give them up.
But when two of her uncles came to visit, and found out that she was still using training wheels, they had other ideas. You see, when they were her age, their training wheels had long been off.
So they took her training wheels off even against her most valiant objections. Then they proceeded to try to teach her how to ride her bike without training wheels. Now, self-image can really effect how you learn things. Since the girl didn't see herself as ready for the training wheels to come off, she wasn't.
So, once the uncles left, she refused to even touch her bike. Finally, she convinced her Grandfather to put the wheels back on. Her mom told her that, next time the wheels came off, they weren't going back on.
And, when she finally deemed herself ready and took the wheels off, she never asked for them to go back on, because she felt herself ready, and therefore was ready.