Speaking of belief...
Super heroes are generally a self portrait of their creators so if the creator/writer does not feel within themselves that they are the one destined to save the day there is a disconnect in the depiction or product!
This can lead to the main central character not getting the job done and thus passing it on to someone else to finish the deed on their behalf!
Now the big PHAT elephant in the room...
Many black male creators suffer from a certain self identity crisis that is rarely a problem among their white male counterpart creators or even Asian Manga/Anime creators!
Obviously T'chadwick Boseman, Ryan Coogler and Michael B. Jordan overcame that as duty called but then there were also Marvel directives that required their A game on the set!
What can happen in the case of black creator owned products or those separate from Marvel or DC umbrellas is that the confidence level is often low as opposed to epic!
This is where belief comes in as the inner hero has to think beyond and outside the box on their own and have a sort of spiritual swagger that will not be compromised!
1.3 Billion Dollar MCU Black Panther is a license to print money and any writer, director or actor that takes up the challenge should be ready to meet or exceed those expectations!
If you don't have faith in yourself it's much harder to keep pace with something that requires that form of self extension even in the world of make believe and escapism!