@sam: when naruto was training he was using his sown chakra. there were times when he almost went kyubi becaus he had almost run out of his own chakra, then naruto subconciously began to use the kyubi chakra. naruto even being able to survive with the kyubi within him is amazing, and somthing that cannot be done by most peolpe. as of right now the only people who can surpress the kyubi is sasuke and yamato. both are only able to do it because of their spacial abilities(sharingan and yamato with shodai's cells)
"Our deepest fear is not that we are inadequate.
Our deepest fear is that we are powerful beyond measure.
It is our light, not our darkness that most frightens us.
We ask ourselves, Who am I to be brilliant,
gorgeous, talented, fabulous?"
Actually, who are you not to be?