You must continue to gain expertise, but avoid thinking like an expert.
Denis Waitley

You must learn from your past mistakes, but not lean on your past successes.
Denis Waitley

You must look within for value, but must look beyond for perspective.
Denis Waitley

You must stick to your conviction, but be ready to abandon your assumptions.
Denis Waitley

You must understand that seeing is believing, but also know that believing is seeing.
Denis Waitley

You must welcome change as the rule but not as your ruler.
Denis Waitley