There are pros and cons of experience. A con is that you can't look at the business with a fresh pair of eyes and as objectively as if you were a new CEO. Fire yourself on a Friday night and come in on Monday morning as if a search firm put you there as a turn-around leader. Can you be objective and make the bold change?
Most of our pocket wisdom is conceived for the use of mediocre people to discourage them from ambitious attempts and generally console them in their mediocrity.