One of the both cruelest and emptiest barbs insecure people in power like to ambush people they do not understand with is, “You don’t have what it takes.”
What’s most interesting about this vague accusation is that it has no criteria by which we can demonstrate otherwise. There is no way to measure up. There is no “what it takes” being discussed.
Whatever it is, though, you don’t seem to have it. This would be laughable if it were so hurtful.
Do you find yourself giving vague accusations such as this one more power over you than they deserve?