I think part of the problem involved in encouraging people to reach their potential is their inability to recognize their own gifts. But I suppose this is a problem inherent to any gift - for the most part we don't really choose what we get, and sometimes that makes it hard to understand why we should value it. There is no reason to think that Spiderman prefers his powers to that of being able to read minds.
On the other hand, maybe this problem is just another symptom of sleep deprivation.