I do believe personality disorders are involved in cases such as this, and the one you mentioned, Kyla! These people generally refuse to take responsibility for themselves, blame others, are unable to make a good life for themselves, because they have wrapped themselves in bitterness and anger.
I have a brother like this. He has a diagnosis of Dependant Personality Disorder, with features of Narcissism, and Borderline. He is 60 and lives in my mother's basement, where he literally does nothing, all day, day after day. He used to have a blog about the environment, but his computer broke, and now he doesn't even have that. My mom has an old colour TV with only 2 colours, and he occasionally watches sports. But he has never thought about others, doing things for others, forgiveness, growing or moving on, and I suppose he never will.
I am not necessarily saying the OP is like this, but certainly, there are some crucial issues that he is not revealing, or perhaps doesn't want to know himself, about his life, and his relationship with God, which, by his select use of Scriptures to support his own ravings, is certainly not a rich and fulfilling relationship, with God leading and guiding him, and transforming him in spite of himself!