Hi Dulaney. I feel for you here, and it is very challenging when you KNOW that your victim mentality is where you are coming from, and not be able to fully break out of it yet.
I had a pretty nice childhood, but there was a fair bit of neglect and emotional abuse, which seemed to increase after I was 18 and has continued. I feel like I'm not half the person I was meant to be because of this, and it is hard to push past the victim mentality, as it is what we have come to be used to, since, in reality we ARE victims of other peoples ignorance and pain and victimhood themselves. I also went through a period of mourning for that child who has been lost, so it's perfectly normal.
I don't know if it is realistic to expect of yourself to feel good on a consistent basis...do you? I mean, even great people have crap days, they just don't tell anyone about it since it might sully their rep
What are your dreams? There's a book I have titled Ïf the dream is big enough, the facts don't count". Maybe searching out stories of people who inspire you may lead to the realization that not everyone who has had a great childhood went on to make something of themselves, as you think...and convertly, not everyone who had a less than loving childhood went on to be a hopeless case. I think the determining factor seems to be whether the INDIVIDUAL has a dream that they want to make happen or not? I know it's not always easy, but that seems to be an underlying thread in most great peoples stories...that they didn't let anything stand in their way...not even their past or these determining factors that hold so many people back.
I hope this doesn't make things worse for you, my message is that if you are inspired to greatness, then the universe has a way of helping you get there, regardless of where you came from.