While I agree with the whole article, I take issue with the phrasing of the title - You
are exactly as successful as you want to be if by 'you', you mean your procrastinating, excuse-seeking, risk-averse subconscious. You know, the 'real' you, as opposed to the marionette who answers questions like this and naively thinks it's control ;)
It's a simple change of perspective that, if you can hold on to it, will give the marionette some real power to notice and correct self-harming and/or restricting behaviour.