I work for a small map tech company and my job role is basically a graduate C# developer, with some configuration duties also to cater our product to different

I work for a small map tech company and my job role is basically a graduate C# developer, with some configuration duties also to cater our product to different customers. I didn't know C#, only Java, before starting the job so it's been nice to learn about concepts like WPF and Linq this past year. I do some freelance work for a small business owner in which I code small Java apps that hook to the eBay and Amazon APIs, for the benefit of his business. It makes me a little money but I've recently asked for a pay rise. Other than that, I want to make my own mobile apps using tools like Xamarin but I haven't really built up the confidence in myself to create any of my ideas. They mostly seem like things that have been done before or where I don't see that they might get as much use as the idea does in my head. On top of that, I enjoy my free time. I find it very hard to come home and have the energy to code after my 9 to 5 where I've been doing the same thing, staring at a screen, 7 and a half hours. Instead, I try to exercise a fair bit and build hobbies outside of programming. I'm a bit of an everythingist, admittedly, though it's not a quality I think leads to becoming a master in programming. Has anyone else faced similar problems to me? What is your answer to your own question, OP?