Creating a blog

I really want to create a blog but I have no idea how to do it and what to write about...I honestly feel like a failure because I have nothing to give. Some people write fitness blogs, but I can’t do that. Some people write blogs on how to do things, but I don’t know how to do anything enough to give advice and step by step tutorials. But there’s one thing I’m trying to figure out how to write about...I have anxiety and I feel like it’ll be best if I write about my own experiences because I’ll never run out of ideas. But people wouldn’t just want to hear me rant, maybe I can try to give advice on how I cope with it? Does that seem like something people will read?

Any advice on how to start a blog will help!