Why are these three words so difficult to utter?  Today I stumbled upon this short quip that got me to thinking.

A little boy was having difficulty lifting a heavy stone. His father came along just then. Noting the boy’s failure, he asked, “Are you using all your strength?”

“Yes, I am,” the little boy said impatiently.

“No, you are not,” the father answered. “I am right here just waiting, and you haven’t asked me to help you.”

Author Unknown

I am like this.  Most of us are.  Why is that?