In the face of conflict or adversity, what causes some individuals to prevail while others fail?

It is a matter of individual will power and the ability to fight against the odds.

Explanation:

While the way one person responds to adversary conditions has a lot to do with their situation of privilege against the adversary, it also has to do with the way they are conditioned as people.

Some people react better to such conflicts because they are either used to facing such high pressure situations or have mental fortitude for it.

It is also to be considered however that different things affect people differently and there is no way of knowing how one would react to such situation when it comes to it.