What to do when you're 27, and have no idea of money, basic adult skills, or how to be happy?

So I'm in a bit of trouble. I'm about to turn 27. I make $52,000 a year, I don't have any debt, I have some money in my savings account, I'm in good health, I've lived all over the world. I have a degree in mechanical engineering, and I'm kinda a super nerd for my field. I'm about to get another promotion at work. I live in a pretty big city with just about any kind of hobby or activity imaginable. But I feel like shit. <br><br>After years of having someone in my life (mother, ex gf) to help me financially and be a constant friend, I am 100% alone and it feels terrifying. I feel incredibly un-prepared for the real world. I have no idea how to manage my finances, I was born with a silver spoon. I also have never been able to emotionally be single. I move from relationship to relationship, and always end things because I've messed up. I've had the love of my life cheat on me with 2 of my good friends, and was told by someone else I loved that essentially I'm not worthy of love. I'm absolutely convinced that Im a loser, but nobody knows because I'm really good at pretending. <br><br>Today I'm doing some laundry and thinking about how I don't know any basic adult skills, such as how to fix a washing machine, how to use my sewing kit, or to even cook a new recipe. How did nobody teach me this shit when I was growing up? Im 27. Im supposed to know all these things. I remember a couple years ago my ex was surprised that I didn't know I was supposed to turn my dirty laundry inside out. <br><br>I feel like I don't have any friends. I've changed cities so many times that I've never been able to keep any friends. I have friends in my city right now, but we aren't close. They all seem to have better things to do than hang out with me. <br><br>I'm sitting here with my headphones on at 10PM with no idea of what to do with myself. I don't like hanging out with my coworkers, I don't like anything anyway. I'm bored with my hobbies. <br><br>What can I do? Who can I talk to? Is there some book or something I can read to help me understand how to be an adult? How do I learn to be happy?