Maybe you need to be more disciplined in choosing your friends, in choosing your thought life (less negative). Maybe you need to be more disciplined in choosing your words, in choosing how you spend your money, in how you spend your time. Any areas where we are not disciplined, we will not grow.
Don’t let any area of undiscipline keep you from going forward. Krishna put potential on the inside, but we have to work with Him, make the effort, pay the price for excellence.