潜在危害性 It's potentially harmful. 因为过度自信就是自大 Because overconfidence result in arrogance . 容易高估自己，小看别人和事情，容易犯错 It's easy to over-estimate yourself and look down on others, It's easy to make mistakes.自己翻 的
there are some potential dangers as excessive self-confidence will change to arrogance. because it will lead to overestimate yourself and ignore others,which could make mistakes at the same time.
月球的球球
