How might you and your organization promote a culture where success is rewarded and those with demonstrated potential are put forth for promotion without inadvertently encouraging toxic and narcissistic behaviors?

How might you and your organization promote a culture where success is rewarded and those with demonstrated potential are put forth for promotion without inadvertently encouraging toxic and narcissistic behaviors?
Use course material (citing appropriately) to support your ideas and provide a personal example. If you do not have such an example, you may use one from someone you know or an historical example.