You want rapid personal growth? Be ready to be brutal with yourself.
Yep, brutal.
The more painful a truth about oneself is, the more we tend to cover it up from ourselves and the more ready we have to be, to be brutal with ourselves to uncover it, to accept it. Because uncovering and accepting the truth is quite often painful and the first step to progress over an obstacle.
Of course, this is assuming that there aren't enough of people with enough of wisdom around us to tell the truths about ourselves in sweet and painless way. Some of us are lucky enough to have such people, but do all of us?
One good thing about this is, the more habituated you become in being honest with yourself, the more you will see the gains in being honest with yourself. The more gains you see, the less painful it becomes over time to be honest with yourself.