I might be wrong, but it sounds like a perspective to me that you have of yourself.
I feel if you change how you see yourself, entirely. you could change what you attract to yourself, the tragedy, drama, and failure.
I would start by doing some things you might not have tried for yourself to improve your environment you spend the most time in to your liking, like redecorating, wiring up a sound system if you enjoy quality music, make your central spot your haven, by doing something yourself you can be proud of, even if it's not graduating with a degree, if you installed dimmer switches, or successfully raised a spice garden, you're slowly gaining self confidence. I think that's a good first step.

Then I would sit myself down, and make for myself a goal sheet, and pin it to a wall. make it your focus. I feel focus is kind of essential. It helps to draw your attention to something positive, and away from how you used to feel.

Then everyday, even if you have no idea how, have fun exploring your own unique adventure into achieving this goal. Along the way you'll feel more empowered as you accomplish more things, learn patience, and go out to learn different things at different places with people, and you'll find you'll attract new positive people just like who you're becoming along the way.

I feel really in the end it's not so much about the goal. It's about what you gain from the experience while making it happen, and I think, maybe that's when you begin to trust yourself. I'm not an expert though. Good luck. I've been there too.