There's some evidence that burn out and depression are linked. If you can afford therapy, through benefits or just writing it off as an investment in yourself, I would recommend it. What I've gotten out of therapy has been worth the cost and has helped me with burnout. The brain is a funny thing and it may or may not be your job that's the issue.
Choose a better job. There are a lot of software jobs that aren't as glamorous as working for startups. Sure, you don't get to build applications with frameworks invented 5 minutes ago, but they often reasonably well and offer better work-life balance. Why do you want to work at a startup? Why not a bank or a large outsourcing company like Accenture?
Ask yourself why do you want to be a developer? I've known people that love developing software to the point they would do it for free, on their own time, in addition to working. I've also known people that leave it behind the moment they move into management. They like technology stuff, but don't love building software. If it's more a lifestyle or culture thing, then, look for jobs on the analyst/product manager side rather than engineering. Maybe sales?
Go back to school. Why go to school if you already know how to program? Because that's not the point of a degree in computer science. CS is about the why we do things the way we do. It would do a few things for you: 1) fill in some of the gaps your feel are important and 2) allow you to reset your brain a little, and 3) allow you a way to reset your career.
The thing to remember is we're always suffering imposter syndrome at some level if we're growing. As you push into new areas you'll always feel like a bit of a fraud. I'm currently going through it as a I move into management and they keep adding people to my team. At the same time I need to present the face of "I know what I'm doing," inside my head I think "I have no idea what I'm doing." That's normal. What's not normal, is feeling like you're drowning.
Choose a better job. There are a lot of software jobs that aren't as glamorous as working for startups. Sure, you don't get to build applications with frameworks invented 5 minutes ago, but they often reasonably well and offer better work-life balance. Why do you want to work at a startup? Why not a bank or a large outsourcing company like Accenture?
Ask yourself why do you want to be a developer? I've known people that love developing software to the point they would do it for free, on their own time, in addition to working. I've also known people that leave it behind the moment they move into management. They like technology stuff, but don't love building software. If it's more a lifestyle or culture thing, then, look for jobs on the analyst/product manager side rather than engineering. Maybe sales?
Go back to school. Why go to school if you already know how to program? Because that's not the point of a degree in computer science. CS is about the why we do things the way we do. It would do a few things for you: 1) fill in some of the gaps your feel are important and 2) allow you to reset your brain a little, and 3) allow you a way to reset your career.
The thing to remember is we're always suffering imposter syndrome at some level if we're growing. As you push into new areas you'll always feel like a bit of a fraud. I'm currently going through it as a I move into management and they keep adding people to my team. At the same time I need to present the face of "I know what I'm doing," inside my head I think "I have no idea what I'm doing." That's normal. What's not normal, is feeling like you're drowning.