'All that a man achieves and all that he fails to achieve is the direct result of his own thoughts.' In a justly ordered universe, where loss of equipoise would mean total destruction and therefore individual responsibility is absolute.
A man's weakness and strength, purity and impurity, are his own, and not of another man's; they are brought about by himself, and not by another; and they can only be altered by himself, never by another.
A man's condition, suffering, happiness etc. are evolved from his heart. Just like even if a Tree desires, he cannot give his fruits to another tree, similarly one man's thought and associated results cannot be transferred to others. As he thinks, so he is; as he continues to think, so he remains.